diff --git a/lib/cocoa/TApplicationException.m b/lib/cocoa/TApplicationException.m
new file mode 100644
index 0000000..1f658de
--- /dev/null
+++ b/lib/cocoa/TApplicationException.m
@@ -0,0 +1,84 @@
+#import "TApplicationException.h"
+#import "TProtocolUtil.h"
+
+@implementation TApplicationException
+
+- (id) initWithType: (int) type
+             reason: (NSString *) reason
+{
+  NSString * name;
+  switch (type) {
+  case TApplicationException_UNKNOWN_METHOD:
+    name = @"Unknown method";
+    break;
+  case TApplicationException_INVALID_MESSAGE_TYPE:
+    name = @"Invalid message type";
+    break;
+  case TApplicationException_WRONG_METHOD_NAME:
+    name = @"Wrong method name";
+    break;
+  case TApplicationException_BAD_SEQUENCE_ID:
+    name = @"Bad sequence ID";
+    break;
+  case TApplicationException_MISSING_RESULT:
+    name = @"Missing result";
+    break;
+  default:
+    name = @"Unknown";
+    break;
+  }
+
+  self = [super initWithName: name reason: reason userInfo: nil];
+  return self;
+}
+
+
++ (TApplicationException *) read: (id <TProtocol>) protocol
+{
+  NSString * reason = nil;
+  int type = TApplicationException_UNKNOWN;
+  int fieldType;
+  int fieldID;
+
+  while (true) {
+    [protocol readFieldBeginReturningName: NULL
+              type: &fieldType
+              fieldID: &fieldID];
+    if (fieldType == TType_STOP) { 
+      break;
+    }
+    switch (fieldID) {
+    case 1:
+      if (fieldType == TType_STRING) {
+        reason = [protocol readString];
+      } else { 
+        [TProtocolUtil skipType: fieldType onProtocol: protocol];
+      }
+      break;
+    case 2:
+      if (fieldType == TType_I32) {
+        type = [protocol readI32];
+      } else { 
+        [TProtocolUtil skipType: fieldType onProtocol: protocol];
+      }
+      break;
+    default:
+      [TProtocolUtil skipType: fieldType onProtocol: protocol];
+      break;
+    }
+    [protocol readFieldEnd];
+  }
+  [protocol readStructEnd];
+
+  return [TApplicationException exceptionWithType: type reason: reason];
+}
+
+
++ (TApplicationException *) exceptionWithType: (int) type
+                                      reason: (NSString *) reason
+{
+  return [[[TApplicationException alloc] initWithType: type
+                                         reason: reason] autorelease];
+}
+
+@end