[Bug] Checking Box to install Kerbalism results in crash

[wylker]

Background

• Operating System: Win 10
• CKAN Version: 1.26.4
• KSP Version: 1.7.3.2594

Have you made any manual changes to your GameData folder (i.e., not via CKAN)?

I had the dev version of Kerbalism installed and deleted it before trying to add the ckan version back in.

Problem

The following error occurs when clicking on the kerbalism installation checkbox. Other checkboxes do not seem to cause this.

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: rowIndex
   at System.Windows.Forms.DataGridView.InvalidateRow(Int32 rowIndex)
   at CKAN.Main.ConflictsUpdated(Dictionary`2 prevConflicts)
   at CKAN.Main.set_Conflicts(Dictionary`2 value)
   at CKAN.Main.<UpdateChangeSetAndConflicts>d__63.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at CKAN.Main.<ModList_CellValueChanged>d__284.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.<ThrowAsync>b__6_0(Object state)

[HebaruSan]

Duplicate of #2852

[HebaruSan]

Thanks for the report, this is fixed in #2854.