thank you so much for your help it worked out and this old guy did.
BTW why did i lose my files, i just opened the program and puff, everything was gone???
I don't know for sure, I only know that you're not the first user it happens to, that's why I've created the automatic backups...
My best guess is that reading your coollection data failed, maybe because access was temporarily blocked by your antivirus while it was analysing the file. As a result the app thought there was no coollection at all and created an empty one.
A few versions ago I've added a safety measure that I thought could prevent this kind of corruption even when the antivirus interferes, but visibly it didn't work, so I'm still puzzled by this issue.
If someone has a better explanation, I'm all ears!