Unhandled Exception when upgrading mods

[davidjeddy]

Thanks for wanting to bring an issue to our attention!

Before you open a ticket, please do a quick search of the existing issues to see if it's already been brought up.

CKAN Version:
1.22.1-g174271a (beta)

Operating System:
Win10

The issue you are experiencing:
Unhandled exception, pressing cont makes CKAN unresponsive (but not locked up). Taskmgr must be used to kill app. Pressing 'exit' closes the app

How to recreate this issue:
Update KSPInterstellar:

CKAN error codes (if applicable):

 Exception Text 
System.NullReferenceException: Object reference not set to an instance of an object.
   at CKAN.Main._MarkModForUpdate(String identifier)
   at CKAN.Util.Invoke[T](T obj, Action action)
   at CKAN.Main.PostInstallMods(Object sender, RunWorkerCompletedEventArgs e)
   at System.ComponentModel.BackgroundWorker.OnRunWorkerCompleted(RunWorkerCompletedEventArgs e)

Loaded Assemblies 
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
----------------------------------------
ckan
    Assembly Version: 0.0.0.0
    Win32 Version: 0.0.0.0
    CodeBase: file:///D:/KSP/CKAN/ckan.exe
----------------------------------------
System.Configuration
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Core
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Xml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Windows.Forms
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Transactions
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/System.Transactions/v4.0_4.0.0.0__b77a5c561934e089/System.Transactions.dll
----------------------------------------
Microsoft.GeneratedCode
    Assembly Version: 1.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Numerics
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll
----------------------------------------
System.Runtime.Serialization
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.Serialization/v4.0_4.0.0.0__b77a5c561934e089/System.Runtime.Serialization.dll
----------------------------------------
System.Xml.Linq
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
----------------------------------------
System.Data
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1636.0 built by: NETFXREL3STAGE
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
Anonymously Hosted DynamicMethods Assembly
    Assembly Version: 0.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/mscorlib/v4.0_4.0.0.0__b77a5c561934e089/mscorlib.dll
----------------------------------------
Microsoft.CSharp
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/Microsoft.CSharp/v4.0_4.0.0.0__b03f5f7f11d50a3a/Microsoft.CSharp.dll
----------------------------------------
System.Dynamic
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Dynamic/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Dynamic.dll
----------------------------------------
System.EnterpriseServices
    Assembly Version: 4.0.0.0
    Win32 Version: 4.6.1586.0 built by: NETFXREL2
    CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_64/System.EnterpriseServices/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll
----------------------------------------

[Commissar0617]

#2003

[HebaruSan]

The change in #2184 will either fix this or change the use case and stack trace beyond recognition. Closing this issue; please report a new one if you have problems in this flow in the next version.