Hello,

I was attempting to make some changes to my piping settings in a 2017 project. Selecting MEP settings on the manage tab, then clicking Mechanical settings I receive an error which requires a shutdown with the option to save recovery files. No issues with the recovery files, but I opened again and got the same exact issue again. Repeated in a different Revit model and recieved the same results. I can also reproduce the crash by selecting a pipe, choosing to edit the type and altering the routing preferences, then selecting "segments and sections" and there's an immediate crash. Segments and sections can be reached from the Mechanical settings drop down, so it's clear to me there is an epicenter for this issue.

Any ideas?