I have been given an .xla file that was originally written for excel 2000, that others in my office using office 2007 and below are able to use with no issues. I am running office 2010.

The VBA project "modules" has a set of functions that work fine from the workbook, and set of sub routines that run fine from the developer tab. There is a custom toolbar on the add-ins tab that has custom buttons in it used to call the sub routines. When I press any button here I get an error saything "cannot run the macro c:\......The macro may not be available in this workbook or all macros may be disabled." Macros are enabled. I and others have checked and double checked this.

I am not a programmer, so have limited understanding of how all of this works, but am assuming it is a versioning issue. Is there a way to get these buttons working?