I recently reset my N5200 firmware V2.00.04 to factory defaults to try fixing another problem (still unresolved). Now I cannot even access the Accounts>Users and Accounts>Groups screens in the webui. Selecting either from the drop-down box takes me to a blank error message (see below). Clicking OK at the error screen brings me to the RAID information page in both cases. The problem is the same in Internet Explorer and Firefox.