Hi Trisha,
Thanks for the information - I've tried with ArcGIS Enterprise 10.5 & 10.5.1 with Operation Dashboard desktop version 10.3.4.1523 and I can't replicate the crash - can you confirm what version of ArcGIS Enterprise you're using?
Have you tried with a blank web map?
Does Ops Dashboard crash when working with single and multidisplay operation views?
What system is Ops Dashboard installed on?
Have you tried on a colleague's machine?
Carmel