Atrium Core Console - Class Manager Not working

I just did a patch upgrade from AR 7.5.00 Patch 6 to AR 7.5.00 Patch 8. And when I click on the Atrium Core Console then Class Manager, I get these errors below. Error calling destination cmdbclassservice (ERROR (90):Cannot open catalog; Message number = 90; arsystem.com (0):RPC:Successnull)

Atrium Core Console Error

I just did a patch upgrade from 7.5.00 Patch 6 to 7.5.00 Patch 8. And when I click on the Atrium Core Console then Class Manager, I get these errors below. Error calling destination cmdbclassservice (ERROR (90):Cannot open catalog; Message number = 90; arsystem.com (0):RPC:Successnull) And