So I tried to install 2.5.1 tonight, and I ran into an issue. I got the following message. Anyone have any ideas?

Cannot proceed with this update, because the application cannot be found in the stored installation directory.

If you have manually renamed or moved the application, move it back to its original location, then start this update installer again. Alternatively, use the original full installer to reinstall before using this update installer.

I may have moved my original TSP2 location, and 2.5 I erased due to the issues I was hearing other people have. Where exactly is the original location on a Mac?