On my work computer (Excel 2010, Win 7) when I am stepping through my VBA code using F8 and come to a Workbooks.Open line, the macro automatically kicks in and runs through to the end instead of just stepping to the next line of code. This happens nearly every time but occasionally it works as it should. To prevent this, I have to put a breakpoint on the next line following Workbooks.Open and after that I can step (F8) through the rest of the code. I have never had this problem before and it doesn't happen on my home computer. Any ideas?