SSRS Reports don't show labels

SSRS Reports aren't showing labels. Only Labels!@SYSxxxxx

This suddenly showed up after a code move.  It was preceded by an 'XppBridgeException' when running a single report (Print Invoice Journal).  There are a few posts out there with potential solutions such as checking your reporting service account password.  Our password never changes so there is no issue there.

I tried restarting the AOS.  Didn't work.  Cleared all cache.  Didn't work. Deployed all reports.  Didn't work.

Solution, hopefully, forthcoming...

Solution:

A Full CIL and reboot of our AOS servers and our SQL server has solved this problem.