Developed application in Excel 2010 VBA not working in Excel 2007

I developed a VBA driven workbook in Excel 2010 with ActiveX objects.

I have a user with Excel 2007 and the ActiveX Objects are frozen, combo box and command button. She did something that opened the debugger. I added a reference in the VBA editor for Microsoft Active X objects 2.8

But when I tried to test it I got a compile error.

Is Excel 2007 not compatible or is this a security setting issue?
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DavisroBudget AnalystAsked:
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Roy CoxGroup Finance ManagerCommented:
ActiveX controls can be problematic but they should be backwards compatible from 2010 to 2007.

What's the compile error and maybe attach an example workbook?
DavisroBudget AnalystAuthor Commented:
I'm reading that deleting this file will fix it
C:\Users\USERNAME\AppData\Local\Temp\Excel8.0\MSForms.exd

from http://stackoverflow.com/questions/27414170/excel-2010-activex-controls-no-longer-working-after-windows-updates

But the IT Dept. is recommending she upgrade to Office 2010. So I'd rather let them handle it
Roy CoxGroup Finance ManagerCommented:
It could well be that but that update was some time ago.
DavisroBudget AnalystAuthor Commented:
Yes, but there've been no VBA workbooks to trigger the error
Roy CoxGroup Finance ManagerCommented:
It probably is that, just follow the instructions on the problem computer. Youu could also see if there have been any later updates to put the problem right

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