Hi James,
Thanks for the reply indeed. I actually just confirmed that this recent hotfix caused some problems and the remediation hotfix to that is in queue. For now, you can fix the issue manually (On-Premise only) by going to your VSA and loading \Kaseya\WebPages\ManagedFiles\VSAHiddenfiles and then load the serverRolesAudit.lua file and on line 215 change DoesNotContains to DoesNotContain - that will resolve it.
I will reply again to this thread once the hotfix is released as well.