Sorry for the crash, it's always awful when it happens.
I've sent your code, please confirm that you got it.
It's great that you have backups, here's how to restore them...
First you should launch Coollector and use the menu "Help->Locate my coollection file" to know where's the file that you want to replace.
https://www.coollector.com/help.html#coollectionNow you close Coollector (otherwise the system won't let you replace the coollection file). If needed, rename your backup as "MyCoollection.cool" (it must have that exact name), then copy it to the location you've found. The system will ask you to confirm that you want to replace the file already there.
Voila!