50+ and proud of it.

Bear in mind that I'm a developer with a VB.NET development environment (Visual Studio) loaded onto my PC. I had previously created an "Invoice Import" program using .NET, and because I was having problems with "Click-Once" deployment, I decided (in frustration) to simply put the .EXE file on the server and get my customer to execute it from there. She got the dreaded CLR20r3 error:     I didn't get this error at first - the program ran just fine - which was confusing to say the least. I guessed that it was because I had VS installed. Wrong. I re-booted my PC and lo-and-behold, I got the error too. I Googled for this error for ages and there was no definitive answer. A lot of entries pointed to "missing file or DLL". But which one? The answer was remarkably simple in my case. I simply chose "Debug the program" and selected "my" VS version (2005): The next box to appear is the "real" error: