VSTO 3.0 in visual studio 2008

i have an excel addin project originally created to work with excel 2007, but once i upgraded to excel 2010, now i can't even load the project.  if i run the excel file as a stand alone app, none of the buttons now work.  
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Arno KosterCommented:
you could open the files, copy the code fragments, open a new excel 2010 spreadsheet and paste the code in corresponding modules.
Then check the correct working of the code fragments line-by-line by stepwise executing them.

When correct working has been verified, save the spreadsheet as an excel 2010 add-in. When the code gives errors or you need specific help, please post the sections that give problems here.

An excel add-in regularly is made in excel, where does visual studio comes in ?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Editors IDEs

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.