How can you tell what release of CEM you are running?
Release : 6.0
The only available and supported version of Compliance Event Manager is 6.0.
You can verify the version of Compliance Event Manager by running a SMP/E list of the CSI and the FMID will include the version, for example version 6.0 has FMID CCEM600.
//LISTPTFS EXEC PGM=GIMSMP,PARM='DATE=U',REGION=0M
//SMPCSI DD DISP=SHR,DSN=SECMF.CEM6UNI.CSI
//SMPHOLD DD DUMMY
//SMPCNTL DD *
SET BOUNDARY(CAIT01).
LIST SYSMOD
PTFS
APAR .
/*