Hi,
ok, my app is up and running again after one whole business day :))
I've looked through tons of code, checked everything I could think of and finally applied an enabled_access method for a second time and the class worked! I don't know what I had done so this is working now, I changed the enabled property from public to protected and back again, commented out some methods and uncommented them again, etc., etc. ... one of these things changed the behaviour. What a day!
I'm still wondering, what the cause for the strange behaviour is. However, I will keep the access method - I don't really have a good feeling about the whole thing, but it seems to be working.
If anyone can give some comments about what I could do to prevent VFP from searching for the access method, you're still very welcome.
Armin