Ok guys I really want to help out with the latest two problems. It's however hard from just forum messages. To start with:
Can one of the people who has the add-on problem email me their copy of the add-on? Maybe it will tell me what's wrong with it.
Secondly, for the carousel problem I need a volunteer who will give me shell / database access to their server as I have absolutely no idea how to reproduce this problem. It doesn't occur on my server nor on my local box.
Let me know who wants to help out!
As for donations: It's greatly appreciated! The info is in the README file: send it to firstname.lastname@example.org