I suspect you have Excel 2003 and 2007 on your machine. I think there is a
setting to define which version starts up automatically (and I saw it set
recently, but don't remember where to find it). It was buried. Why not
open the version you need first and then double click on the workbook you
want opened.

"Greg Lovern" wrote:

I'm trying to fix a problem in my add-in that only occurs when the
user starts Excel by double-clicking a workbook file. But the problem
is slightly different depending on the version of Excel.

Is there a quick way to change what version starts up when you double-
click a workbook? Having to reinstall Excel each time I want to change
takes a lot of time when I'm changing often.