Personal.dgnlib configuration variable

I know there are variable for dgnlibs and guidgnliblists but my question is there a variable specific to the personal.dgnlib file. We find that some files in the  C:\Users\username\AppData\Local\Bentley\OpenRoadsDesigner\10.0.0\prefs get corrupt and deleting these files help with 50% of problems we see with ORD. The personal.dgnlib is located here and we would like to keep that file. Is there a variable specific to the personal.dgnlib?