ok so my key works on every other server. on our Git server, from PuTTY, nothing:

This app can't run on your PC
To find a version for your PC, check with the
software publisher.
A colleague set up the account. They swear they pasted my key. i'm starting to suspect teh server, but i don't even know where to look.
its frustrating because i cant see anything on the server side, and teh error message is teh same for every possible mistake. is there a way to get more detail from the client at least? im about to throw this thing out the window lol