EddieDee, I use SAV for NAS also on 7 different servers. On one of them, I started seeing this ACCESS_DENIED and FAIL when it would be asked to scan a file. I also started being unable to access my web based admin console on two of the servers around the same time of the SEP install, BUT uninstalling the SEP client did not fix the console issue.
We use Celerra AV as the client for these servers with SAV for NAS beign the engine and we have a support ticket open with Celerra about this, but like you said, maybe it's more SEP than anything. I am uninstalling SEP from the one server and will see if I still get the ACCESS_DENIED and FAIL messages.