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Hello:
I am running Multistate only recaptures models. Once I close Mark I cannot retrieve models. I reopen the dbf and if I tryto retrieve a model it produces and error (Error code 2[]/Sunbsystem base/Function Arrangement/ Argument 6) and aborts . I can see model output but cannot retrieve any model or run any new ones. I realized that, when I reopen previous analyses, there are missing PIMs.
It happens with several Mark versions (I tried the last 3 ones).
I would greatly appreciate any help.
Thanks,
Jabi

Working offline, we figured out that indeed, there was a 'weird bug' in retrieving models (as described in the OP). Gary quickly worked out the problem, and has released a patched version of MARK which is available in the usual places. You're encouraged to update.