Ken, i understand your point about Xl2007.....just being abit dim there!

As for the Add-Ins i mus be missing the point somewhere......on both workbooks i went to Tools | Add In's and just excel standard add ins were available, i checked VBA Add-In Manager no items, i checked Control.XLA Tools |Add In's just excels standard, i checked VBA Add In Manager no items!

I know i have probably misunderstood, so if you could explain kinda idiot fashion for me i would appreciate it!

In testbook1 and Control.xla thisworkbook module i dont have
[VBA]
Private Const strAddinPath = ...
[/VBA]Regards,
Simon