All:
Many thanks to Chuck Hardee for pinpointing our issue, basically we upgraded to z/OS 1.13 over the weekend and with this the SYSPROG also put in a new CAILIB but what he forgot to do was to give everybody read only access to the new CAILIB, so as Chuck pointed out the S-A00 masked what was really a S-913 Security Violation by the IDMS CV attempting to open the CAILIB data set.
William M. Allen, Jr.