deleted shared files accidently

Hi, When trying to install print shop version 15 I was asked to uninstall printshop version 12 first. When I initiated the uninstall I was asked if I wanted to delete certain shared files. I said yes, which was probably a big mistake. After that when I tried to install version 15 it would load about 19% and then stall and I would get an error saying component transfer error, and remote access procedure failure. No Error code number. I tried to install countless times to no avail. And when I tried to re-install version 12 I get the same error messages. I tried a system restore, but it wouldn't allow me to restore from any previous date. I tried getting the files out of the recycle bin, but that didn't work. Printshop no longer offers any tech advise for these versions.
Any suggestions?
Running system xp
Thanks, Lowfire.