Hi Florian,
sorry, to hear about this issue. To be honest, I can hardly believe that it's those parameters or sliders causing a crash on plugin registration. I'm more thinking of some memory maybe being trashed beforehand. But in the end, it doesn't matter so much, what I do believe or not or what I might suspect, we want to assist you in solving this riddle.
As we have no evidence for issues in the described area, nor are we able to reproduce it via a simply example, I'd like to ask you for some more information. Could you maybe provide us with a stack trace, when the crash happened? Either from within Visual Studio or via the crash reporter (in the latter case, please notify me here, I need to look out for the report).
I have turned this thread into a question.
Cheers,
Andreas