TUNE0037 Not running in Model 204, can't restart.

This message is received in response to the RESTART command, and it only occurs under CMS. It indicates that the address space was not running in the Model 204 load module at the time the RESTART command was issued. This means that the virtual machine was probably running CMS system code, hence it is extremely unlikely to successfully intercept the RESTART command. Issue the RESTART command several times (until this message is not received) to try to catch the virtual machine in the Model 204 load module. If this proves impossible, more drastic measures must be taken. These measures might include logging on to the virtual machine, issuing a CP VMDUMP command, and logging off.