SolidWorks error message: Wait... generating document tree

Hi All

We've installed SW2014 and EPDM 2014 on a brand new, very high spec HP SolidWorks workstation.

It is immediately giving error messages when opening an assembly.

First is Ref Dlg - The parameter is incorrect

Then it says Wait... generating document tree

But it never completes this task, and you have to kill SolidWorks

Does anyone know what this means, and how to fix it?

*edit:  found a line in the registry somewhere under EPDM called RefDlg

SolidworksSolidworks Pdm enterprise Pdm