MyCoollection.cool is the default Coollection. You've launched the Coollector app and it's normal it has created a new default coollection. But I had told you not to launch the app. I had told you to double click your coollection file instead.
Close Coollector if it's opened, then double click LindsayCoollection.cool. It should open with Coollector, or maybe you will be asked what program to use to open it, and you'll point to the Coollector app.
Tell me how it goes!
I'm definitely closing the application before I try to open one of the databases (because it has me wait the 30 seconds, after I click on the cool file, which I am going to donate, because it's an awesome program). I tried some experimenting:
I purposely opened the MyCoollection file and added one movie (it was empty) and closed down the program. When I open LindsayCoollection or MomCoollection they both now show that one movie.
I renamed MyCoollection (the one with the one movie) to MyCoollectionNew and moved it to the trash. I then renamed LindsayCoollection back to MyCoollection and opened it. All my movies are back.
I next moved MomCoollection to the trash and moved the MyCoollectionNew back and tried opening it. Instead of showing one movie it has in the database, it's showing all movies that are now the database named MyCoollection.
This was all on my Mac. I also tried to move the files to different locations on my computer, same results.
HOWEVER, if I right click the files and have them open in XP via Parallels desktop, both databases open correctly. The MyCoolection shows 530 movies and MyCoollectionNew shows 1 movie. So it must be something up with how the Mac program works or how Macs work in general? So strange, but at least I can use two databases in XP.