- The callback_error_ handle was never being setup.

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
@@ skipping 182 matching lines @@
   va_list args2;
   va_start(args2, format);
   OS::VSNPrint(buffer, (len + 1), format, args2);
   va_end(args2);
 
   const String& message = String::Handle(isolate, String::New(buffer));
   return Api::NewHandle(isolate, ApiError::New(message));
 }
 
 
-void Api::SetupCallbackError(Isolate* isolate) {
+void Api::SetupAcquiredError(Isolate* isolate) {
   ASSERT(isolate != NULL);
   ApiState* state = isolate->api_state();
   ASSERT(state != NULL);
-  state->SetupCallbackError();
+  state->SetupAcquiredError();
 }
 
 
-Dart_Handle Api::CallbackError(Isolate* isolate) {
+Dart_Handle Api::AcquiredError(Isolate* isolate) {
   ASSERT(isolate != NULL);
   ApiState* state = isolate->api_state();
   ASSERT(state != NULL);
-  PersistentHandle* callback_error_handle = state->CallbackError();
-  return reinterpret_cast<Dart_Handle>(callback_error_handle);
+  PersistentHandle* acquired_error_handle = state->AcquiredError();
+  return reinterpret_cast<Dart_Handle>(acquired_error_handle);
 }
 
 
 Dart_Handle Api::Null(Isolate* isolate) {
   ASSERT(isolate != NULL);
   ApiState* state = isolate->api_state();
   ASSERT(state != NULL);
   PersistentHandle* null_handle = state->Null();
   return reinterpret_cast<Dart_Handle>(null_handle);
 }
@@ skipping 4588 matching lines @@
   }
   {
     NoGCScope no_gc;
     RawObject* raw_obj = obj.raw();
     isolate->heap()->SetPeer(raw_obj, peer);
   }
   return Api::Success(isolate);
 }
 
 }  // namespace dart