Has anyone seen this error before? I am not able to look at any PI data in Processbook because of it.
It lets me log into PI servers but when I try to pull points the following is displayed for each point:
Description = 'Unknown'
Source = '(null)'
This could be caused by the PI Message Subsystem shutting down. Look in the message logs and if you find messages from pimsgss that it has restarted try restarting ProcessBook.
Retrieving data ...