Dealloc takes places too early [iOS]

[mememto]

Hi to everyone and thanks in advance. I have a new problem. Whenever i pop the viewcontroller where G3MWidget_iOS is placed, i get the following Log message after dealloc takes place:

Warning: WARNING: The TexturesHandler is destroyed, but the inner textures were not released.

Sometimes, if i pop the viewcontroller before all tiles are loaded in the current visible window an exception (EXC_BAD_ACCESS) is thrown in Dowloader_IOS.mm line 122:

void Downloader_iOS::removeDownloadingHandlerForNSURL(const NSURL* url) {
[_lock lock];
[_downloadingHandlers removeObjectForKey:url];
[_lock unlock];
}

It seems that _lock._priv is NULL already.

So, I think that i'm not unloading all the stuff needed, or i'm not telling the SDK to stop download images. Any suggestion? Thanks in advance.