Executing External Command from IOF ends IOF

What is the MVS job entry subsystem supported by IOF?
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: We are z/OS 1.9, IOF 8C. : When someone enters an external command such as 'TSO QW' (for example), the command executes fine, and exits you back to where you were in IOF. Then you hit enter, and IOF exits, giving the messages : *,ISPP100 : *,, , : *,Panel 'VIOFSC7C' error : *,Panel not found. : It appears the error is due to the IOF panel library being dynamically allocated by the invoking CLIST instead of being hard-coded in the ISPPLIB concatenation in the TSO logon proc. DDLIST shows the panel library still allocated to my ISPF session when IOF ends. : This did not break IOF a year, or even six months, ago. It was happening on my z/OS 1.7 systems before I migrated them, so I don't think it's exclusive to z/OS 1.9. I haven't been able to tie this change to any other software changes, but my testing was not exhaustive. : I know I can fix this by hardcoding the panel library in the TSO logon proc, but for performance reasons I'd prefer to not do that. : Any ideas on why this is working like this now, or what I can do to avoid blowing up IOF? : We invoke IOF like this, it it matters: : I,'CMD(%IOF &ZCMD) NEWAPPL(IOF) NOCHECK' : : Cheers,,,Steve

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