Error 1317 on a server 2012r2 with SEP 12.1.5 upgrade

Symantec Endpoint protection

Error 1317.  An error occurred while attempting to create the directory C:\ProgramData\Microsoft\Windows\Start Menu

Retry  Cancel

New, old local admin accounts.  AD accounts.  Removed/readded server to AD.

It's Server 2012r2. 

We tied (many times) to manually install the upgrade.  It was 12.1.4 before, so there's no gap.  Was working fine.

We get that error message with any account that runs it.

Applied ownership to the whole c: drive.  No change.

Tried a server specific installer for SEP.  Tried the user/client SEP installer.  No change.

Ran a disk check on the server yesterday.  sfc /scannow.  No change.

I'll try uninstalling the whole SEP.  Then reinstall this upgrade I guess.  After a checkpoint....