Converting Excel 2003 Macros to 2010

No it's when I try and save it. So I can load it in 2003 format but if I save it I usually end up with Not Responding. If I save it as Macro Enabled it works sometimes but then it usually ends up Not responding as well.

I have stripped out all the worksheets except one, deleted all the information and attached the macros. The Membership Worksheet has an embedded macro and there are modules with the macros in.