i received the following message twice when stopping a simulation immediately after clicking Run so that I could adjust another scenario. Model available here

Message:

The following application error has occurred in BEopt v3.0.1.0.  Please report this to the BEopt development team and restart the application.

Object reference not set to an instance of an object.

Stack Trace:
 at NREL.BEopt.ObjLibCS.RunMgr.doCaseIterRuns() in C:\git\beopt\Source\BEoptObjLibCS\RunMgr.cs:line 425
 at NREL.BEopt.ObjLibCS.RunMgr.StartCaseRuns(IList`1 caseList, IList`1 caseTabNums, Boolean UserWantsToAutosize) in C:\git\beopt\Source\BEoptObjLibCS\RunMgr.cs:line 141
 at NREL.BEopt.BEoptUIVB.BEopt_MainForm.tsbRun_Click(Object sender, EventArgs e) in C:\git\beopt\Source\BEopt\BEopt_MainForm.vb:line 2291

Thanks