"GS" wrote in message
Might be worth looking in -
HKCU\\Software\Microsoft\Office\12.0\Excel\Options
and and look for any conflicts, two OPEN keys with solver perhaps

Peter T

That's really good info to know, thanks! (Geez, you'd think I'd know this
tidbit already; - it just might help with my Addins Manager app!)

The one that can be confusing is the ATP which needs a different approach to
install with its XLL

Peter T