BadImageFormatException

Feb 26, 2015 at 5:45 PM
I've been happily using this app for years, but recently I started getting a BadImageFormatException when I try to start it. "Could not load file or assembly 'zip' ... The module was expected to contain an assembly manifest. ... Using .NET Runtime 2.0.50727.5485, Created with .NET Runtime 2.0.50727.4927".

I'm on Win7 64 bit, and I haven't made any changes to my system that I'm aware of, other than Microsoft updates.
Feb 26, 2015 at 8:45 PM
Interestingly, this only happens when the exe is in c:\bin, which is where I keep all of my tools that don't need to be installed. It was working fine there until recently, and now I get the error noted above. If I move the exe to any other dir (including something right under c:\, like c:\foo), it works fine.