I have read other posts regarding a similar problem but those solutions do NOT work.  Old buttons do not work for me (still works for others) but new buttons will fine.  I have tried to remove .exd files.  I have repaired office (i.e. re-installed the whole darn thing).  ran MS Office Fix it and I still cannot make old buttons work.  We have so many files that use buttons, i can't afford to insert all new buttons all over the place.  I need a more permanent solution.  

Hi,
We have definitely heard your frustration now, Microsoft understands the position our customers are in and we are actively working to find a solution besides a FixIt that can be deployed to remedy the issue. If we have any update, we'll post in this forum immediately.

Thanks for your understanding.

George Zhao
TechNet Community Support

Update:

Hotfixes for this issue have been released in the March 2015 Updates for Office 2007, 2010 & 2013.

Please see here:

http://blogs.technet.com/b/the_microsoft_excel_support_team_blog/archive/2014/12/13/forms-controls-stop-working-after-december-2014-updates-.aspx

Regards,

George Zhao
TechNet Community Support