When I try to open a file from an EPDM folder, the open window just flashes and I have to force closed the application

When I try to open a file in SW Composer, if I browse to an EPDM location the open window flashes repeatedly and becomes unresponsive. I can only force closed the application and of course any changes are lost.

Opening files from other locations seems to work, and I can save files into EPDM from composer.

I am using SW composer 2015 x64 edition, and SW 2015 (I guess EPDM is the same as the Solidworks version?)

Many thanks,

James Ward

SolidworksComposer