I would check the size of your images in the Stained Glass Superglaze album via FTP. I'm guessing that at least 1 of those images is too large to process (it may have been Imported instead of Uploaded). If it were my guess, it would be the picture named 025 (1).JPG (id=385). If you download that picture to your computer and resize it using an image program, then re-upload and overwrite the picture on the server, it should work out fine for you.
The reason that it is stopping is that the server does not have enough resources to process a file that big. Either the memory_limit or the max_execution_time settings in the php.ini global variables of your server is not sufficient to have the memory or processing time it needs to create a thumbnail of the image.