Unable to add files to workspace from network drives

[MarkP]

Hi Groovers,

For some reason a few users cannot add files to a Groove workspace from a
network drive. After clicking on the 'Add files' link and clicking on 'My
Computer' only the C (windows install) and D drives (CD) network drives show.
The mapped network drives do not appear.

When browsing from explorer I can see the mapped network drives. I've also
tested added files from a network drive to an Outlook mail message to confirm
that the issue is isolated to Groove.

This only happens for some users. We are all using the same version:
3.1a.2390.

I've tried reinstalling Groove but with no result.

Any ideas on what the issue may be?

Thanks