Excel Add In not loading when Opening File

[cubsfan05]

I have an excel add-in which is a ribbon which houses a great deal of financial tools that I use on a regular basis so I don't have to hunt around excel for things I use regularly. The add-in has always loaded automatically whenever I opened excel - whether I opened excel by creating a new blank document or by double clicking a previously existing file.

Starting a few days ago though, the add-in only opens when opening excel by creating a new blank file. I can't think of anything that changed recently. I've done some other Google searches which all came up with nothing. Using Excel 2007.
Even when opening a file by double clicking, Excel still says the add-in is active (in excel options).

Wondering if you guys have any ideas, let me know if you have any questions about this issue

Long time viewer, first time poster. Thanks in advance for the help

 

[RoryA]

Does your add-in appear in the Disabled Addins list?

 

[cubsfan05]

Nope. Nothing appears in the disabled addins list

 

[RoryA]

Have you tried running a repair of Office through the control panel? It sounds as though your file associations may need resetting.

 

[cubsfan05]

Trying that now, will let you know how it goes.

 

[cubsfan05]

Have you tried running a repair of Office through the control panel? It sounds as though your file associations may need resetting.

That seems to have done the trick. Thanks for the help.
Don't suppose you have any idea what may have caused the problem