FTM2012 corrupted ... need download to fix

When I started experiencing problems accessing my files via FTM2012 and trying several ways to restore & fix FTM, I've concluded that I probably need to re-install FTM2012.

However, when I purchased the program, it was from a download. I do not have a copy of the installation package and I cannot see a way to download it without going thru the purchasing method.

Does anyone know if I can download only the software? I still have my serial numbers. Or am I screwed and have to re-purchase?

Thanks in advance.