Hi again Ken. Finally had the chance to have a play around, but while the addin seemed to install okay, I'm having a few problems.
For instance, if I go to add a folder to my favorites, as per below:
Click image for larger version. 

Name:	Addin issues 1.jpg 
Views:	25 
Size:	75.3 KB 
ID:	569

...then I get an error message "There was an error updating the database", as per the below:
Click image for larger version. 

Name:	Addin issues 2.png 
Views:	27 
Size:	41.9 KB 
ID:	570

And I also get an error if trying to add the active workbook to the favorites folder:
Click image for larger version. 

Name:	addin issues 3.png 
Views:	23 
Size:	19.1 KB 
ID:	571

I haven't tried to reinstall or anything yet.

Any thoughts?

I'm using Excel 2010.