As far as I know file type plugins should continue to work normally. There were no changes to that part of the code. In fact the code to add them one by one is exactly the same as the code to add them in large numbers, its just that for single adds the large number is one. However, since I have no idea what that plugin does internally, I cant be sure.
Run calibre in debug mode and see if anything is printed out when the problem happens.
|