vs6

Hi,

I am writing an mfc project in vs6 and I have a problem!
When I add radio button to my dialog based application and run the
application and press that button my application hang, even when I try to
run it in the test mode inside visual studio and press that radio button it
stack the all environment why??
It append only if I add a radio button for a regular button its all ok!

I install sp-6 but it didn't solve the problem.

Thanks