After regional settings change, a running .NET app crashes.

The computer is configured initially with English locale settings. After .net

framework 2.0 installation and all other setups, our c# program started to

run properly. Howewer, just after a while, we noticed that the regional

settings is wrong and changed to turkish. After restarting the computer and

when the program starts, the program crashed abnormally. When we revert the

change, the program run properly.

Now I see a correlation between regional settings and .net code. The

question is how can I handle the regional setting change without causing a

crash?