I get the following error when setting up a user in the mobility server:

Initial sync error: Problem syncing folders for user .cn-xx,ou=xx,o=xx: exceptions must be classes or instances, not NoneType

I found a post earlier that had a similair issue and it suggested running GWCheck on the account. I have run GWCheck and done a fix and repair and structural rebuild but still have the same issue.

Any Ideas?