Object reference not set to an instance of an object runtime error

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niallnaidoo
Junior Member
Posts: 4
Joined: Fri Aug 21, 2020 11:53 am
Vensim version: Ventity

Object reference not set to an instance of an object runtime error

Post by niallnaidoo »

Hi, I'm having trouble locating the cause of the issue of this NullReferenceException runtime error, as far as I can see all entities have their keys and time starts initialised in the built-in data file. What could be the causes of this? Details pasted, thanks:

Product: Ventity
Version: 1.0.0.0

Assembly Name Assembly Version
Accessibility 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
Anonymously Hosted DynamicMethods Assembly 0.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/mscorlib/v4.0_4.0.0.0__b77a5c561934e089/mscorlib.dll
Antlr4.Runtime 4.6.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
AssemblyLoader4x64 2.1.6.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.DLL
DevExpress.Charts.v19.1.Core 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.Data.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.Images.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.Printing.v19.1.Core 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.Spreadsheet.v19.1.Core 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.Utils.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraBars.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraCharts.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraCharts.v19.1.UI 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraEditors.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraGrid.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraLayout.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraTreeList.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
DevExpress.XtraVerticalGrid.v19.1 19.1.4.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
Infralution.Licensing.Forms 6.2.0.0 file:///C:/Program%20Files/Ventity/Infralution.Licensing.Forms.DLL
Microsoft.GeneratedCode 1.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
Microsoft.GeneratedCode 1.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
Microsoft.GeneratedCode 1.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
mscorlib 4.0.0.0 file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
Northwoods.Go 5.1.0.45 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
Northwoods.Go.Layout 5.1.0.45 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
PresentationCore 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/PresentationCore/v4.0_4.0.0.0__31bf3856ad364e35/PresentationCore.dll
PresentationFramework 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework/v4.0_4.0.0.0__31bf3856ad364e35/PresentationFramework.dll
ScintillaNET 3.0.1.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
System 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
System.ComponentModel.DataAnnotations 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.ComponentModel.DataAnnotations/v4.0_4.0.0.0__31bf3856ad364e35/System.ComponentModel.DataAnnotations.dll
System.Configuration 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
System.Core 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
System.Data 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
System.Data.DataSetExtensions 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Data.DataSetExtensions/v4.0_4.0.0.0__b77a5c561934e089/System.Data.DataSetExtensions.dll
System.Data.HashFunction.Core 2.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
System.Data.HashFunction.CRC 2.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
System.Data.HashFunction.Interfaces 2.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
System.Data.HashFunction.xxHash 2.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
System.Data.Linq 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Data.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Data.Linq.dll
System.Drawing 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
System.Numerics 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll
System.ValueTuple 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.ValueTuple/v4.0_4.0.0.0__cc7b13ffcd2ddd51/System.ValueTuple.dll
System.Windows.Forms 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
System.Windows.Forms.DataVisualization 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms.DataVisualization/v4.0_4.0.0.0__31bf3856ad364e35/System.Windows.Forms.DataVisualization.dll
System.Xaml 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xaml/v4.0_4.0.0.0__b77a5c561934e089/System.Xaml.dll
System.Xml 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
System.Xml.Linq 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
UIAutomationClient 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/UIAutomationClient/v4.0_4.0.0.0__31bf3856ad364e35/UIAutomationClient.dll
VE_Primitives 1.0.0.0 file:///C:/Program%20Files/Ventity/VE_Primitives.DLL
VE_RuntimeManager 0.9.7219.33535 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
Ventity 1.0.7219.33554 file:///C:/Program%20Files/Ventity/Ventity.exe
Ventity 1.0.7219.33542 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
VentityGlobals 1.0.0.0 file:///C:/Program%20Files/Ventity/VentityGlobals.DLL
VentityImpl 1.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
VentityMainForm 1.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
VentityModel 1.0.0.0 file:///C:/Program%20Files/Ventity/AssemblyLoader4x64.dll
VentityRuntimeFunctions 1.0.0.0 file:///C:/Program%20Files/Ventity/VentityRuntimeFunctions.DLL
VenUtils 1.0.0.0 file:///C:/Program%20Files/Ventity/VenUtils.DLL
WindowsBase 4.0.0.0 file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/WindowsBase/v4.0_4.0.0.0__31bf3856ad364e35/WindowsBase.dll


--------------------------------------------------------------------------------
Level 0 Exception
--------------------------------------------------------------------------------
TYPE : NullReferenceException
MESSAGE : Object reference not set to an instance of an object.
SOURCE : VE_RuntimeManager
METHOD : TransformText
STACK TRACE : at VE_RuntimeManager.VE_ModelBuilder.EntityGeneratorTemplate.TransformText()
at VE_RuntimeManager.VE_ModelBuilder.ModelAssembly..ctor(IRuntimeAdapter adapter, IModelSaveList saveList)
at VE_RuntimeManager.VE_ModelBuilder.ModelAssemblyManager.GetModelAssembly(IRuntimeAdapter adapter, IModelRunConfig modelRunConfig)
at VE_RuntimeManager.RuntimeTask.CreateRuntimeModel(RuntimeContext runtimeContext)
at VE_RuntimeManager.RuntimeTask.Run(RuntimeContext runtimeContext)
at VE_RuntimeManager.RuntimeManager.<Run>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at VE_RuntimeManager.RuntimeManager.<Run>d__10.MoveNext()
at VentityMainForm.AppMainForm.<>c__DisplayClass400_0.<RunModel_new>b__2()
*** this is probably indicative of the original error ***
tomfid
Administrator
Posts: 3070
Joined: Wed May 24, 2006 4:54 am

Re: Object reference not set to an instance of an object runtime error

Post by tomfid »

Does this happen at runtime? Are you running the latest 4.0 beta, or v3?
niallnaidoo
Junior Member
Posts: 4
Joined: Fri Aug 21, 2020 11:53 am
Vensim version: Ventity

Re: Object reference not set to an instance of an object runtime error

Post by niallnaidoo »

Yes, it happens when I try to run the model using version 3. Version 4 shuts Ventity down without displaying an error, so I've reverted to version 3.
tomfid
Administrator
Posts: 3070
Joined: Wed May 24, 2006 4:54 am

Re: Object reference not set to an instance of an object runtime error

Post by tomfid »

Can you share the model with us? (Email to info at ventity dot biz or post here, if possible.)
niallnaidoo
Junior Member
Posts: 4
Joined: Fri Aug 21, 2020 11:53 am
Vensim version: Ventity

Re: Object reference not set to an instance of an object runtime error

Post by niallnaidoo »

Sure, model attached, thanks.
Attachments
Core.zip
(293.47 KiB) Downloaded 150 times
LarryYeager
Junior Member
Posts: 5
Joined: Fri Oct 14, 2016 12:43 am
Vensim version: Ventity

Re: Object reference not set to an instance of an object runtime error

Post by LarryYeager »

Thank you for sharing your model. The null reference and crash errors were data driven software errors, which I have fixed. We will supply you with a new release very soon. There are also some model definition and data issues that cause warnings. We will provide a list of necessary changes along with the new release.
niallnaidoo
Junior Member
Posts: 4
Joined: Fri Aug 21, 2020 11:53 am
Vensim version: Ventity

Re: Object reference not set to an instance of an object runtime error

Post by niallnaidoo »

Noted, thank you Larry
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