Excel 2010 Compatibility Issue? (Could not set the SelText Property)

[GBagley]

I have a macro that was working fine in Excel 2007, but just upgraded to 2010 and am getting this error:

Run-time error '-2147467259 (80004005)':
Could not set the SelText property. Unspecified error.


The line that it highlights is in a UserForm_activate event handler:

UserForm1.ListBox1.AddItem ("Item 1")
UserForm1.ListBox1.AddItem ("Item 2")
UserForm1.ListBox1.AddItem ("Item 3")
UserForm1.ListBox1.AddItem ("Item 4")

Any ideas? I searched for the error, but it turned up literally nothing!

 

[GBagley]

Just tried again on another computer (which also has Excel 2010), and it worked fine. Odd...

 

[GBagley]

Bumping this back up there.