Unable to attach the process

Question

Hi,
      Am unable to attach the process to my solution while debugging. Am using com components in my solution where the components are developed in vb and my solution is in C#. Initially when i tried to attach the process it got worked for 2 days but from the next day onwards am unable to debug and getting some script error. The same thing happened like it got worked for 2 days and from the next day onwards not working to my friend. Is there any settings we need to create or use while using the com components and different dlls. Please help me out

Thanks
Ranjith.