could anybody help me.

My problem is:
I have some macro ( let's say MAKRO1 ). When I run my macro I receive error "Code Execution interupted", then I have to press "Continue" and all is OK. I'd like to mention then this macro run correctly on the all other computer. The problem is only on my wife computer. By the way, code execution interupt error appears each time on the other code line.
Could you explein me what is wrong with MACRO1

Thanks a lot