For the following C++ and ActionScript3 code, my AIR application crashes when the `getBytes2` method is called. Why is this happening? Solution suggestions would be appreciated.

C++ Code:

```
FREObject getBytes2(FREContext ctx, void* funcData, uint32_t argc, FREObject argv[])
{
    FREObject result;
    FREByteArray actualBytes;

    FREAcquireByteArray(argv[0], &actualBytes);
    uint8_t* nativeString = (uint8_t*) "Hello World from C++"; 
    memcpy(actualBytes.bytes, nativeString, sizeof(nativeString));

    FREReleaseByteArray(&actualBytes);

    FRENewObjectFromBool(1, &result);
    return result;
}

```

ActionScript3 Code:

```
    public function getBytes2():ByteArray {
        var ba:ByteArray = new ByteArray();
        this._ExtensionContext.call("getBytes2", ba);
        ba.position = 0;
        return ba;
    }

```