Cognos Error: DPR-REQ-0760

Symptom
DPR-REQ-0760 Invalid Operation “/” “” “xts.run”.
noSession Gj48hwdsGvysdC9wdvw2Gd4qqyG2GqG4dhh4jv9v 0 Thread-13 DISP 2531 1 Audit.Other.DISP.com.cognos.pogo.handlers.engine.ServiceLookupHandler Request Failure PRS-REQ-0760 Invalid Operation “/” “” “xts.run”

Problem
All users are receiving error “DPR-REQ-0760 Invalid Operation “/” “” “xts.run”.” when trying to run reports after a recent restart of the IBM Cognos 8 servers

Solution
Verify the Cognos servers were started in the correct order
Ensure the content manager component is started first, before the report servers