For those of you following this saga, I found that DTRYLST MODULE is the broken component. Replacing this MODULE with an earlier version is a quick fix. The only difference between the z/VM 3.1.0 version of DTRYLST and the z/VM 5.3.0 version is the change to the field sizes to support IBM SHARK DASD. Interestingly, DTRYLST ASSEMBLE is included in z/VM 5.3.0, but was not on z/VM 3.1.0, although the cumulative fixes were. DTRYLST ASSEMBLE on z/VM 5.3.0 includes all previous service.
Peter The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review retransmission dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient or delegate is strictly prohibited. If you received this in error please contact the sender and delete the material from any computer. The integrity and security of this message cannot by guaranteed on the Internet. The Sender accepts no liability for the content of this e-mail or for the consequences of any actions taken on basis of the information provided. The recipient should check this e-mail and any attachments for the presence of viruses. The sender accepts no liability for any damage caused by any virus transmitted by this e-mail. This disclaimer is the property of the TTC and must not be altered or circumvented in any manner.