{
		engine = asCreateScriptEngine();
		engine->SetMessageCallback(asMETHOD(CBufferedOutStream, Callback), &bout, asCALL_THISCALL);
		bout.buffer = "";

		mod = engine->GetModule("test", asGM_ALWAYS_CREATE);
		mod->AddScriptSection("test",
"shared funcdef void TestFunc();"
"shared class TestBase"
"{"
"  void callfn(TestFunc@ fn)"
"    {"
"    }"
"  void test()"
"    {"
"      callfn( function() { } );"
"    }      "
"};"
      );
		r = mod->Build();
		if (r < 0)
			TEST_FAILED;

		asIScriptModule *mod2 = engine->GetModule("test2", asGM_ALWAYS_CREATE);
		mod2->AddScriptSection("test",
"external shared funcdef void TestFunc();"
"external shared class TestBase;"
"class Test : TestBase"
"{"
"};"
      );
		r = mod2->Build();
		if (r < 0)
			TEST_FAILED;

		CBytecodeStream bc1("test");
		r = mod->SaveByteCode(&bc1); assert(r >= 0);
		if (r < 0)
			TEST_FAILED;

		CBytecodeStream bc2("test2");
		r = mod2->SaveByteCode(&bc2); assert(r >= 0);
		if (r < 0)
			TEST_FAILED;

		engine->ShutDownAndRelease();
		engine = asCreateScriptEngine();
		engine->SetMessageCallback(asMETHOD(CBufferedOutStream, Callback), &bout, asCALL_THISCALL);

		mod = engine->GetModule("test", asGM_ALWAYS_CREATE);
		r = mod->LoadByteCode(&bc1);
		if (r < 0)
			TEST_FAILED;

		mod2 = engine->GetModule("test2", asGM_ALWAYS_CREATE);
		r = mod2->LoadByteCode(&bc2);
		if (r < 0)
			TEST_FAILED;

		if (bout.buffer != "")
		{
			PRINTF("%s", bout.buffer.c_str());
			TEST_FAILED;
		}

		engine->ShutDownAndRelease();
	}

When preparing and executing the above code, it stops with the following error.
 

 (0, 0) : Error   : LoadByteCode failed. The bytecode is invalid. Number of bytes read from stream: 287

Thanks for the report. I'll have it fixed as soon as possible.

I've fixed this in revision 2506.

Regards,
Andreas

It seems that trouble occurs with the code which was originally working.
I have not examined it in detail, but if you make the following corrections, the problem will not occur.

				if (func2->funcType == asFUNC_VIRTUAL)
					func2 = ot->virtualFunctionTable[func2->vfTableIdx];

				if (func->IsSignatureEqual(func2))
				{
					func->DestroyHalfCreated();
					func = func2;

+                   savedFunctions[savedFunctions.GetLength()-1] = func2;

					// as this is an existing function it shouldn't be translated as if just loaded
					dontTranslate.Insert(func2, true);

I do not understand it much, I am not confident because it is a patch by intuition.

You're right. The savedFunctions array needed to be updated too just like you did. I didn't have multiple classes in my test case so I didn't detect this problem before, but now I've fixed this in revision 2507.