Hello Chris and Erik, thanks a lot for your replies. I am sorry for my late answer, but I needed some time for testing.
@ Erik: your hint was really helpful and helped me.
Actually I am still experiencing the same problem, but following Eriks advise to uninstall the app and then reload it, I am able to go on
for a while without crashes. Then suddenly the cashes return and I again have to uninstall the app.
Maybe some kind of process, which forces the crashes?
Unfortunately when doing that, I am loosing all macros, brushes, pictures etc.
From my perspective, this is should not be a solution;-)
Would be great, if you could have a look at that!
with kind regards,