running C# apps never works

I have VS.NET installed and everytime I try to run a program made in C# that uses the WinForm API(haven't tried any other languages with it) the JIT comes up and it says: An exception 'System.ArithmeticException' has occured in <app name here>.

Where <app name here> is the name of the exe.

does anyone know of a way to fix this, I have reinstalled and repaired the framework many times and I just dont know how to fix this. Please help.

i've never had that problem...

are you running your own program (you coded it?) If so, could you post the (simplified) code?