solidworks explorer 2010 - add a file location not working

I am attempting to add a search folder in SolidWorks explorer.

I try options/search/add a folder.

The window pops up but the file tree is obscured by gray box in the upper left corner of the window.

I have tried updating display drivers and reinstalling SolidWorks Explorer - no resolution

Has anyone else seen this? 

SolidworksSolidworks Explorer