Tech question

[zap]

I recently lost the WF exe. (corrupted?) file. Right now it just will not start an e-mail game in WF. When I press the play by e-mail button and then the resume button. I get a message saying the WF exe stopped working. This is the only issue. Everything else works.
I want to blame this on a download of a game file? But not sure, it began acting up after I tried to download a file.

My question is. Can I copy the exe file from EF and the put that in replacement of the corrupted WF file. Or is it more involved than that?
If this will work my next question would be where would I find the exe file in the east front.

Thanks in advance for any help