Corrupted C# compiler?

WINDOWS XP STANDARD

I use an graphics application that is customized using C# code. The code is compiled before use and then is executed as needed.

Recently I had to change one of my customized indicators and found that the DrawDiamond command would not work. Changing nothing else in the code except making that phrase DrawSquare caused the indicator to work.

An unchanged backup of the indicator that had previously worked fine also would not work as replacing the non-working one requires compiling the backup version.

Also, another customized indicator properly displays diamonds in the same application -- I am afraid to re-compile it because I do not want to lose this second indicator.

So my conclusion is that the compiler must be corrupted somehow. I have removed all Microsoft.NET Framework entries via add/remove programs and downloaded and installed only Microsoft.NET Framework 2.0 with no success -- still won't draw diamonds with any code.

How can I fix this I would appreciate any help.

Good idea, I will try on second computer.

I am pushing my depth here and I'm not entirely sure what VS2005 means. Is this the Microsoft .NET or all of XP or exactly what

By the way, I uninstalled Microsoft .NET 1.0 and its update as well as 2.0, but only reinstalled 2.0. Is there any reason I should have tried to find and reinstall 1.0

Thanks for considering my problem.

It will take me some time to find out what the software supplier used to create the application. So far I have removed and re-downloaded and re-installed .NET Framwork 2.0 and 1.1. Is there a separate download VS.NET 2005 Where would I find it

Thanks.