Can't delete exe from application folder??

Hello,

I am using VB6 installer. In the File System area under Application Folder...I can delete two dll files that I have there, but not the exe. I have all the files checked out from SourceSafe, but cannot delete the exe file. What I am trying to do is update the exe file to a newer version. I tried to rebuild the project thinking it might take the new exe (since it is in the same location), but no go.

What's up?

Thanks!