Unable to enter Support Module

After creating a new Zone and setting its PURP to SUPP I get the follow error:

'Cannot find any suitable Support zones due to DAC/write access'  when i try to enter the Support Module.

It then kicks me back to my previous module.

I certainly do have access as I just made the Zone in the same session. i can also manually create a SUPPO in the Zone.

Background info:

I'm running E3D 2.1.0.26

Project was recently upgraded from 11.6

All my other 2.1 projects open Supports OK.

DAC is turned off.

I believe all MDS DB's are present.

I have tried entering using the system user, same error.

I have entered var !supportzonename name

many thanks!