MF BEopt model keeps crashing [closed]

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I have a model that has crashed twice after about 60 hours of processing, with this same error both times in the Windows Event Viewer Applications log:

Application: BEopt.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.AccessViolationException at System.Runtime.InteropServices.Marshal.ReadInt32(IntPtr, Int32) at NREL.BEopt.BEoptCommon.Tessellation.glVertex3dvCB(IntPtr) at OpenTK.Graphics.Glu+Imports.TessEndPolygon(IntPtr) at OpenTK.Graphics.Glu.TessEndPolygon(IntPtr) at NREL.BEopt.BEoptCommon.Tessellation.Triangulate(POINTAPI_DOUBLE[], HOLEAPI_DOUBLE[], Boolean, Boolean ByRef) at NREL.BEopt.ObjLibVB.clsBEopt_DrawingTesselation.TESS_TriangulateSurface(NREL.BEopt.ObjLibVB.Vertex[] ByRef, NREL.BEopt.ObjLibVB.PolygonType[] ByRef, NREL.BEopt.ObjLibVB.PolygonType[] ByRef, NREL.BEopt.ObjLibVB.PolygonType[] ByRef, WallAz ByRef, Single ByRef, Boolean ByRef, Boolean ByRef) at NREL.BEopt.ObjLibVB.DrawingRendering.TriangulateSurfaces() at NREL.BEopt.ObjLibVB.DrawingRendering.CreateObject(Int32 ByRef, NREL.BEopt.ObjLibVB.SurfaceArrayList ByRef, Single ByRef) at NREL.BEopt.ObjLibVB.DrawingGeometry.RenderObject_Create(Boolean, Boolean) at NREL.BEopt.ObjLibVB.DrawingGeometry.AddVarsToBldgObj(Boolean, Boolean, Boolean, NREL.BEopt.ObjLibVB.bldgdesc ByRef) at NREL.BEopt.ObjLibCS.BEoptXML.CreateXMLFromSimulation(NREL.BEopt.ObjLibCS.BEoptCase, NREL.BEopt.ObjLibCS.Simulation, System.Collections.Generic.IDictionary`2<system.string,nrel.beopt.objlibvb.bldgdesc> ByRef, Boolean, Boolean, Boolean, System.String) at NREL.BEopt.ObjLibCS.BEoptXML.constructXmlFilesForSimulations(System.Collections.Generic.IList`1<nrel.beopt.objlibcs.simulation>, NREL.BEopt.ObjLibCS.BEoptCase, System.String, Boolean, System.Collections.Generic.IDictionary`2<system.string,nrel.beopt.objlibvb.bldgdesc>, Int32) at NREL.BEopt.ObjLibCS.RunMgr.doCaseIterRuns(Boolean, Boolean) at NREL.BEopt.ObjLibCS.RunMgr.processIteration()

Exception Info: System.Reflection.TargetInvocationException at System.RuntimeMethodHandle.InvokeMethod(System.Object, System.Object[], System.Signature, Boolean) at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(System.Object, System.Object[], System.Object[]) at System.Delegate.DynamicInvokeImpl(System.Object[]) at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry) at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(System.Object) at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry) at System.Windows.Forms.Control.InvokeMarshaledCallbacks() at System.Windows.Forms.Control.WndProc(System.Windows.Forms.Message ByRef) at System.Windows.Forms.ScrollableControl.WndProc(System.Windows.Forms.Message ByRef) at System.Windows.Forms.Form.WndProc(System.Windows.Forms.Message ByRef) at System.Windows.Forms.Control+ControlNativeWindow.OnMessage(System.Windows.Forms.Message ByRef) at System.Windows.Forms.Control+ControlNativeWindow.WndProc(System.Windows.Forms.Message ByRef) at System.Windows.Forms.NativeWindow.Callback(IntPtr, Int32, IntPtr, IntPtr) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG ByRef) at System.Windows.Forms.Application+ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr, Int32, Int32) at System.Windows.Forms.Application+ThreadContext.RunMessageLoopInner(Int32, System.Windows.Forms.ApplicationContext) at System.Windows.Forms.Application+ThreadContext.RunMessageLoop(Int32, System.Windows.Forms.ApplicationContext) at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(System.String[]) at NREL.BEopt.BEoptUIVB.My.MyApplication.Main(System.String[])

This is especially frustrating because of how slow the run is sue to the ... (more)