Hello
Sorry that it took so long for replying to your answer.
It seems that it is somehow related to how we use the FocusDocument on our site.
Strangely enough it worked fine before upgrading CuteEditor.
But I created a testbutton with a call to FocusDocument and that worked fine... so it has to do with normal usage of FocusDocument.
Thank you for your help!
Regards,
Stefan Senn