Thanks for your response. I didn't get an email alert about it and I just saw it.
Probably because I could start the program without a design. Then I opened my own design and it crashed again and now it won't even start.
What might be the reason is that I imported an extra furniture library on my ...

Worked with v.5.5 for some weeks, all fine. This Monday I openend a model and directly after opening it crashed. Today I removed v5.5 and installed v5.5.2 instead but still the same problem. Btw. Windows could not remove the old version completely, have chosen to reinstall in the directory.
Windows ...