I am also having the same issue, is there an answer on the above? it should be completely a client problem.

how to fix this issue "Turns out (in this case) it was a weird share permissions issue. The reboot caused a redirection of the user's HOME folder to remap to a share on the network. Because the machine hadn't been restarted when the policy was put in place, it hadn't taken effect until reboot.

This in itself was harmless, but there was an issue with the permissions on the share that hosted the network home folders, which caused the user to not have write privileges to their own home directories.

This was made apparent later, since the activity of attempting to create a new query window didn't error with a meaningful "can't create file xyz" type error."

if it is the problem