SolidWorks2017 crashes on save of new part with 2 sessions opened

Folks,

   We are currently using SW2017 SP5.

   I have one user that has a crash issue with a 2nd session of SW open, the scenario is this:

    He opens the first session of SW, opening an existing file set.

    He then opens a 2nd session of SW for file comparisons.  He can open existing files in this session, make changes, save, no issues.  However, if he starts a new part as normal, creates even one feature, then hits save, the 2nd session dumps out, leaving the first session open with no issues.

   I know I have seen some Crash related issues when saving, but not exactly like this so thought I would start a different thread.

Does anyone have any thoughts on this?  I may reset his registry, but this is a relatively new workstation, meaning newer installation.  None of my other users to this point have complained about this as of yet.

Thanks!

Brian

SolidworksGeneral