Only users OU showing when fetching OUs from Active Directory

Only users OU showing when fetching OUs from Active Directory

Hi
 
Really struggling to get our users to import from Active Directory again. I've had it working and importing fine, but now when I do a scan for the OUs to import from I only get the users OU (even after clicking on fetch OUs again).
 
It has previously worked ok. I don't know if changing to a 2008r2 functional level for the domain (so only 2008r2 DCs) is causing an issue.
 
I have tried running select * from adorganizationalunits; from a query and it lists all of the OUs including a new OU that I have jut created, so I'm guessing it is managing to fetch them.
 
Have tried in IE9, Chrome and Firefox to see if it was a browser issue but all give the same results.
 
Anyone seen this or have any thoughts?
 
Thanks

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