I think I may have uncovered an OS bug and wanted to see if anyone else has observed the same issue.
My somewhat complex OS model seems to running fine with a number unimportant warnings and a few sizing errors. I WAS including 6 design days, but decided to remove them for computational time reasons.
Before removing DDYs
and after removing DDYs (using the checkboxes and red X delete button)
New errors are along the lines of
* Severe * IP: IDF line~37391 Object=CONTROLLER:MECHANICALVENTILATION, name=CONTROLLER MECHANICAL VENTILATION 3, Required Field=[Zone 1 Name] was blank.
and cause my model analysis to be...terminated
