App-V shows "invalid namespace" in deployment monitoring for users on particular server

Hi,

I have this App-V package that works fine BUT on one Windows 2008 R2 (with App-V 4.6 SP3 and App-V 5.0 SP3) server: it seems to work fine for some users, NOT for others: they just don’t see the package in their start menu.
The App-V package also works fine on other servers.

What I contstantly get in deployment monitoring (SCCM) is “invalid namespace”.  I could just give it a reboot, but that would mean all users would have to logoff and then I’d really would need to know that the reboot would help.

Found this

https://social.technet.microsoft.com/Forums/en-US/eeb8fcde-0df0-49bf-a27e-1569f539d2f8/evaluation-failed-0x8004100e-invalid-namespace?forum=configmanagerapps

but not sure it would help me since it is related to App-V 4.6 SP2.

Would like to know what actually is going on. Please advise.

J.

Jan Hoedt