diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da70ebb..c60a4bf 100755
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,7 +91,7 @@ jobs:
 
     - name: Install dependencies
       run: >
-        curl -sSL https://baltocdn.com/xp-framework/xp-runners/distribution/downloads/e/entrypoint/xp-run-9.1.0.sh > xp-run &&
+        curl -sSL https://github.com/xp-runners/reference/releases/download/v9.2.0/xp-run-9.2.0.sh > xp-run &&
         composer install --prefer-dist &&
         echo "vendor/autoload.php" > composer.pth
 
diff --git a/composer.json b/composer.json
index 3620dbd..d816364 100755
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
   "description" : "Compression I/O for the XP Framework",
   "keywords": ["language", "module", "xp"],
   "require" : {
-    "xp-framework/core": "^12.0 | ^11.0 | ^10.0",
+    "xp-framework/core": "^12.11 | ^11.11",
     "php" : ">=7.4.0"
   },
   "require-dev" : {
diff --git a/src/main/php/io/streams/compress/Brotli.class.php b/src/main/php/io/streams/compress/Brotli.class.php
index 373a8ad..f3ae74f 100755
--- a/src/main/php/io/streams/compress/Brotli.class.php
+++ b/src/main/php/io/streams/compress/Brotli.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{InputStream, OutputStream, Compression};
 
 class Brotli extends Algorithm {
@@ -31,7 +31,7 @@ public function compress(string $data, $options= null): string {
   /** Decompresses bytes */
   public function decompress(string $bytes): string {
     if (false === ($data= brotli_uncompress($bytes))) {
-      $e= new IOException('Decompression failed');
+      $e= new OperationFailed('Decompression failed');
       \xp::gc(__FILE__);
       throw $e;
     }
diff --git a/src/main/php/io/streams/compress/Bzip2.class.php b/src/main/php/io/streams/compress/Bzip2.class.php
index 90f825c..6cdaf29 100755
--- a/src/main/php/io/streams/compress/Bzip2.class.php
+++ b/src/main/php/io/streams/compress/Bzip2.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{InputStream, OutputStream, Compression};
 
 class Bzip2 extends Algorithm {
@@ -32,7 +32,7 @@ public function compress(string $data, $options= null): string {
   public function decompress(string $bytes): string {
     if (is_string($data= bzdecompress($bytes))) return $data;
 
-    $e= new IOException('Decompression failed ('.(false === $data ? 'general error' : 'error #'.$data).')');
+    $e= new OperationFailed('Decompression failed ('.(false === $data ? 'general error' : 'error #'.$data).')');
     \xp::gc(__FILE__);
     throw $e;
   }
diff --git a/src/main/php/io/streams/compress/Bzip2InputStream.class.php b/src/main/php/io/streams/compress/Bzip2InputStream.class.php
index a98a94b..600a183 100755
--- a/src/main/php/io/streams/compress/Bzip2InputStream.class.php
+++ b/src/main/php/io/streams/compress/Bzip2InputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{Streams, InputStream};
 
 /**
@@ -16,14 +16,14 @@ class Bzip2InputStream implements InputStream {
    * Constructor
    *
    * @param  io.streams.InputStream $in
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   public function __construct(InputStream $in) {
     $this->fd= Streams::readableFd($in);
     if (!stream_filter_append($this->fd, 'bzip2.decompress', STREAM_FILTER_READ)) {
       fclose($this->fd);
       $this->fd= null;
-      throw new IOException('Could not append stream filter');
+      throw new OperationFailed('Could not append stream filter');
     }
   }
 
@@ -35,7 +35,7 @@ public function __construct(InputStream $in) {
    */
   public function read($limit= 8192) {
     if (false === ($bytes= fread($this->fd, $limit))) {
-      $e= new IOException('Reading compressed data failed');
+      $e= new OperationFailed('Reading compressed data failed');
       \xp::gc(__FILE__);
       throw $e;
     }
diff --git a/src/main/php/io/streams/compress/Bzip2OutputStream.class.php b/src/main/php/io/streams/compress/Bzip2OutputStream.class.php
index b3af7bd..735775c 100755
--- a/src/main/php/io/streams/compress/Bzip2OutputStream.class.php
+++ b/src/main/php/io/streams/compress/Bzip2OutputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{OutputStream, Streams};
 use lang\IllegalArgumentException;
 
@@ -19,7 +19,7 @@ class Bzip2OutputStream implements OutputStream {
    * @param  io.streams.OutputStream $out
    * @param  int $level default 6
    * @throws lang.IllegalArgumentException if the level is not between 0 and 9
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   public function __construct(OutputStream $out, $level= 6) {
     if ($level < 0 || $level > 9) {
@@ -30,7 +30,7 @@ public function __construct(OutputStream $out, $level= 6) {
     if (!stream_filter_append($this->fd, 'bzip2.compress', STREAM_FILTER_WRITE, ['blocks' => $level])) {
       fclose($this->fd);
       $this->fd= null;
-      throw new IOException('Could not append stream filter');
+      throw new OperationFailed('Could not append stream filter');
     }
   }
   
diff --git a/src/main/php/io/streams/compress/DeflatingOutputStream.class.php b/src/main/php/io/streams/compress/DeflatingOutputStream.class.php
index e71c7ee..4b5a576 100644
--- a/src/main/php/io/streams/compress/DeflatingOutputStream.class.php
+++ b/src/main/php/io/streams/compress/DeflatingOutputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{OutputStream, Streams};
 use lang\IllegalArgumentException;
 
@@ -28,7 +28,7 @@ public function __construct(OutputStream $out, $level= 6) {
     if (!stream_filter_append($this->out, 'zlib.deflate', STREAM_FILTER_WRITE, $level)) {
       fclose($this->out);
       $this->out= null;
-      throw new IOException('Could not append stream filter');
+      throw new OperationFailed('Could not append stream filter');
     }
   }
   
diff --git a/src/main/php/io/streams/compress/Gzip.class.php b/src/main/php/io/streams/compress/Gzip.class.php
index 4c1f047..dde61ac 100755
--- a/src/main/php/io/streams/compress/Gzip.class.php
+++ b/src/main/php/io/streams/compress/Gzip.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{InputStream, OutputStream, Compression};
 
 class Gzip extends Algorithm {
@@ -31,7 +31,7 @@ public function compress(string $data, $options= null): string {
   /** Decompresses bytes */
   public function decompress(string $bytes): string {
     if (false === ($data= gzuncompress($bytes))) {
-      $e= new IOException('Decompression failed');
+      $e= new OperationFailed('Decompression failed');
       \xp::gc(__FILE__);
       throw $e;
     }
diff --git a/src/main/php/io/streams/compress/GzipInputStream.class.php b/src/main/php/io/streams/compress/GzipInputStream.class.php
index 305b165..2e5f769 100755
--- a/src/main/php/io/streams/compress/GzipInputStream.class.php
+++ b/src/main/php/io/streams/compress/GzipInputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\InputStream;
 
 /**
@@ -61,7 +61,7 @@ public function stream_close() {
    * Constructor
    *
    * @param  io.streams.InputStream $in
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   public function __construct(InputStream $in) {
     $header= '';
@@ -78,13 +78,13 @@ public function __construct(InputStream $in) {
     // * OS       (Operating system)
     $this->header= unpack('a2id/Cmethod/Cflags/Vtime/Cextra/Cos', $header);
     if ("\x1F\x8B" !== $this->header['id']) {
-      $e= new IOException('Invalid format, expected \037\213, have '.addcslashes($this->header['id'], "\0..\377"));
+      $e= new OperationFailed('Invalid format, expected \037\213, have '.addcslashes($this->header['id'], "\0..\377"));
       \xp::gc(__FILE__);
       throw $e;
     }
 
     if (8 !== $this->header['method']) {
-      throw new IOException('Unknown compression method #'.$this->header['method']);
+      throw new OperationFailed('Unknown compression method #'.$this->header['method']);
     }
 
     // Extract filename if present
@@ -103,7 +103,7 @@ public function __construct(InputStream $in) {
     if (!stream_filter_append($this->fd, 'zlib.inflate', STREAM_FILTER_READ)) {
       fclose($this->fd);
       $this->fd= null;
-      throw new IOException('Could not append stream filter');
+      throw new OperationFailed('Could not append stream filter');
     }
   }
 
@@ -118,7 +118,7 @@ public function header() { return $this->header; }
    */
   public function read($limit= 8192) {
     if (false === ($bytes= fread($this->fd, $limit))) {
-      $e= new IOException('Reading compressed data failed');
+      $e= new OperationFailed('Reading compressed data failed');
       \xp::gc(__FILE__);
       throw $e;
     }
diff --git a/src/main/php/io/streams/compress/GzipOutputStream.class.php b/src/main/php/io/streams/compress/GzipOutputStream.class.php
index 66414ba..cec34a4 100755
--- a/src/main/php/io/streams/compress/GzipOutputStream.class.php
+++ b/src/main/php/io/streams/compress/GzipOutputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{Streams, OutputStream};
 use lang\IllegalArgumentException;
 
@@ -22,7 +22,7 @@ class GzipOutputStream implements OutputStream {
    * @param  io.streams.OutputStream $out
    * @param  int $level default 6
    * @throws lang.IllegalArgumentException if the level is not between 0 and 9
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   public function __construct(OutputStream $out, $level= 6) {
     if ($level < 0 || $level > 9) {
@@ -43,7 +43,7 @@ public function __construct(OutputStream $out, $level= 6) {
     if (!($this->filter= stream_filter_append($this->fd, 'zlib.deflate', STREAM_FILTER_WRITE, $level))) {
       fclose($this->fd);
       $this->fd= null;
-      throw new IOException('Could not append stream filter');
+      throw new OperationFailed('Could not append stream filter');
     }
     $this->md= hash_init('crc32b');
   }
diff --git a/src/main/php/io/streams/compress/InflatingInputStream.class.php b/src/main/php/io/streams/compress/InflatingInputStream.class.php
index 3e74961..765d152 100644
--- a/src/main/php/io/streams/compress/InflatingInputStream.class.php
+++ b/src/main/php/io/streams/compress/InflatingInputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{Streams, InputStream};
 
 /**
@@ -20,7 +20,7 @@ class InflatingInputStream implements InputStream {
   public function __construct(InputStream $in) {
     $this->in= Streams::readableFd($in);
     if (!stream_filter_append($this->in, 'zlib.inflate', STREAM_FILTER_READ)) {
-      throw new IOException('Could not append stream filter');
+      throw new OperationFailed('Could not append stream filter');
     }
   }
 
diff --git a/src/main/php/io/streams/compress/Snappy.class.php b/src/main/php/io/streams/compress/Snappy.class.php
index 0151118..aa772b6 100755
--- a/src/main/php/io/streams/compress/Snappy.class.php
+++ b/src/main/php/io/streams/compress/Snappy.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{InputStream, OutputStream, Compression};
 
 /** @see https://en.wikipedia.org/wiki/Snappy_(compression) */
@@ -171,13 +171,13 @@ public function decompress(string $bytes): string {
           $l= $c >> 2;
           if ($l >= 60) {
             $n= $l - 59;
-            if ($pos + $n >= $limit) throw new IOException('Not enough input, expected '.$n);
+            if ($pos + $n >= $limit) throw new OperationFailed('Not enough input, expected '.$n);
             $l= unpack('P', str_pad(substr($bytes, $pos, $n), 8, "\0"))[1];
             $pos+= $n;
           }
 
           $l++;
-          if ($pos + $l > $limit) throw new IOException('Not enough input, expected '.$l);
+          if ($pos + $l > $limit) throw new OperationFailed('Not enough input, expected '.$l);
 
           $out.= substr($bytes, $pos, $l);
           $pos+= $l;
@@ -193,7 +193,7 @@ public function decompress(string $bytes): string {
           break;
 
         case 2:
-          if ($pos + 1 >= $limit) throw new IOException('Not enough input, expected 1');
+          if ($pos + 1 >= $limit) throw new OperationFailed('Not enough input, expected 1');
 
           $l= 1 + ($c >> 2);
           $offset= unpack('v', $bytes, $pos)[1];
@@ -204,7 +204,7 @@ public function decompress(string $bytes): string {
           break;
 
         case 3:
-          if ($pos + 3 >= $limit) throw new IOException('Not enough input, expected 3');
+          if ($pos + 3 >= $limit) throw new OperationFailed('Not enough input, expected 3');
 
           $l= 1 + ($c >> 2);
           $offset= unpack('V', $bytes, $pos)[1];
@@ -218,7 +218,7 @@ public function decompress(string $bytes): string {
 
     // Verify uncompressed length
     if ($length !== ($l= strlen($out))) {
-      throw new IOException('Expected length '.$length.', have '.$l);
+      throw new OperationFailed('Expected length '.$length.', have '.$l);
     }
 
     return $out;
diff --git a/src/main/php/io/streams/compress/SnappyInputStream.class.php b/src/main/php/io/streams/compress/SnappyInputStream.class.php
index bb73fce..3c051ab 100755
--- a/src/main/php/io/streams/compress/SnappyInputStream.class.php
+++ b/src/main/php/io/streams/compress/SnappyInputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\InputStream;
 
 /** @test io.streams.compress.unittest.SnappyInputStreamTest */
@@ -14,14 +14,14 @@ class SnappyInputStream implements InputStream {
    *
    * @param  int $n
    * @return string
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   private function bytes($n) {
     while (strlen($this->buffer) < $n) {
       if ($this->in->available()) {
         $this->buffer.= $this->in->read();
       } else {
-        throw new IOException('Not enough input, expected '.$n);
+        throw new OperationFailed('Not enough input, expected '.$n);
       }
     }
 
diff --git a/src/main/php/io/streams/compress/ZStandard.class.php b/src/main/php/io/streams/compress/ZStandard.class.php
index 8091795..71e739e 100755
--- a/src/main/php/io/streams/compress/ZStandard.class.php
+++ b/src/main/php/io/streams/compress/ZStandard.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{InputStream, OutputStream, Compression};
 
 class ZStandard extends Algorithm {
@@ -31,7 +31,7 @@ public function compress(string $data, $options= null): string {
   /** Decompresses bytes */
   public function decompress(string $bytes): string {
     if (false === ($data= zstd_uncompress($bytes))) {
-      $e= new IOException('Decompression failed');
+      $e= new OperationFailed('Decompression failed');
       \xp::gc(__FILE__);
       throw $e;
     }
diff --git a/src/main/php/io/streams/compress/ZStandardInputStream.class.php b/src/main/php/io/streams/compress/ZStandardInputStream.class.php
index b2e0c6a..3992f53 100755
--- a/src/main/php/io/streams/compress/ZStandardInputStream.class.php
+++ b/src/main/php/io/streams/compress/ZStandardInputStream.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\InputStream;
 
 /**
@@ -32,7 +32,7 @@ public function __construct(InputStream $in) {
   public function read($limit= 8192) {
     $bytes= zstd_uncompress_add($this->handle, $this->in->read($limit));
     if (false === $bytes) {
-      $e= new IOException('Failed to uncompress');
+      $e= new OperationFailed('Failed to uncompress');
       \xp::gc(__FILE__);
       throw $e;
     }
diff --git a/src/test/php/io/streams/compress/unittest/CompressionTest.class.php b/src/test/php/io/streams/compress/unittest/CompressionTest.class.php
index ec7a4cd..f6e15db 100755
--- a/src/test/php/io/streams/compress/unittest/CompressionTest.class.php
+++ b/src/test/php/io/streams/compress/unittest/CompressionTest.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress\unittest;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{Compression, MemoryInputStream, MemoryOutputStream, Streams};
 use lang\IllegalArgumentException;
 use test\verify\Runtime;
@@ -138,7 +138,7 @@ public function streams_roundtrip($compressed) {
     Assert::equals('Test', $result);
   }
 
-  #[Test, Values(from: 'erroneous'), Expect(IOException::class)]
+  #[Test, Values(from: 'erroneous'), Expect(OperationFailed::class)]
   public function decompress_erroneous($compressed, $bytes) {
     $compressed->decompress($bytes);
   }
diff --git a/src/test/php/io/streams/compress/unittest/DecompressingInputStreamTest.class.php b/src/test/php/io/streams/compress/unittest/DecompressingInputStreamTest.class.php
index cfd6827..75f2985 100755
--- a/src/test/php/io/streams/compress/unittest/DecompressingInputStreamTest.class.php
+++ b/src/test/php/io/streams/compress/unittest/DecompressingInputStreamTest.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress\unittest;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\{InputStream, MemoryInputStream};
 use test\{Assert, Expect, Test, Values};
 use util\Bytes;
@@ -60,7 +60,7 @@ public function at_level($level) {
     Assert::equals('Hello', $chunk);
   }
 
-  #[Test, Values(from: 'erroneous'), Expect(IOException::class)]
+  #[Test, Values(from: 'erroneous'), Expect(OperationFailed::class)]
   public function reading_erroneous($data) {
     $fixture= $this->fixture(new MemoryInputStream($data));
     try {
diff --git a/src/test/php/io/streams/compress/unittest/GzipInputStreamTest.class.php b/src/test/php/io/streams/compress/unittest/GzipInputStreamTest.class.php
index 625c7bf..1ccb494 100755
--- a/src/test/php/io/streams/compress/unittest/GzipInputStreamTest.class.php
+++ b/src/test/php/io/streams/compress/unittest/GzipInputStreamTest.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress\unittest;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\compress\GzipInputStream;
 use io\streams\{InputStream, MemoryInputStream};
 use test\verify\Runtime;
@@ -40,7 +40,7 @@ public function header_with_original_filename($data) {
     Assert::equals('test.txt', $fixture->header()['filename']);
   }
 
-  #[Test, Expect(IOException::class)]
+  #[Test, Expect(OperationFailed::class)]
   public function from_empty() {
     $this->fixture(new MemoryInputStream(''));
   }
diff --git a/src/test/php/io/streams/compress/unittest/SnappyInputStreamTest.class.php b/src/test/php/io/streams/compress/unittest/SnappyInputStreamTest.class.php
index 47ff065..1d11ae8 100755
--- a/src/test/php/io/streams/compress/unittest/SnappyInputStreamTest.class.php
+++ b/src/test/php/io/streams/compress/unittest/SnappyInputStreamTest.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress\unittest;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\compress\SnappyInputStream;
 use io\streams\{Streams, MemoryInputStream};
 use test\{Assert, Expect, Test, Values};
@@ -41,12 +41,12 @@ public function copy() {
     );
   }
 
-  #[Test, Expect(class: IOException::class, message: 'Not enough input, expected 1')]
+  #[Test, Expect(class: OperationFailed::class, message: 'Not enough input, expected 1')]
   public function from_empty() {
     Streams::readAll($this->fixture(''));
   }
 
-  #[Test, Expect(class: IOException::class, message: 'Not enough input, expected 1')]
+  #[Test, Expect(class: OperationFailed::class, message: 'Not enough input, expected 1')]
   public function not_enough_input() {
     Streams::readAll($this->fixture("\x01"));
   }
diff --git a/src/test/php/io/streams/compress/unittest/ZStandardInputStreamTest.class.php b/src/test/php/io/streams/compress/unittest/ZStandardInputStreamTest.class.php
index bd8870c..1d70130 100755
--- a/src/test/php/io/streams/compress/unittest/ZStandardInputStreamTest.class.php
+++ b/src/test/php/io/streams/compress/unittest/ZStandardInputStreamTest.class.php
@@ -1,6 +1,6 @@
 <?php namespace io\streams\compress\unittest;
 
-use io\IOException;
+use io\OperationFailed;
 use io\streams\MemoryInputStream;
 use io\streams\compress\ZStandardInputStream;
 use test\verify\Runtime;
@@ -26,7 +26,7 @@ public function can_create() {
   #[Test]
   public function read_plain() {
     $in= new ZStandardInputStream(new MemoryInputStream('Test'));
-    Assert::throws(IOException::class, function() use($in) {
+    Assert::throws(OperationFailed::class, function() use($in) {
       $in->read();
     });
     $in->close();