Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.

[TheSpatulaCity]

Background

CKAN Version:
v1.25.2

KSP Version:
1.4.5.2243

Operating System:
Windows 7 x64
.Net 4.5.1 RC

Have you made any manual changes to your GameData folder (i.e., not via CKAN)?
Used previous CKAN and there is some stuff in there. I deleted it once this version of CKAN gave me the fits but CKAN still doesn't like me.

Problem

CKAN crashes upon startup.
I have tried executing it from the KSP main folder, my desktop, my downloads folder...
I took a screenshot of the error and did an OCR conversion to get the text, I checked it for accuracy as best as I could. I even deleted and re installed KSP, but it seems to bring back the exact same version and produce the same error. I have no problems running KSP.

Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
at CKAN.GUIUser.DisplayMessage(String message, Object[] args)
at CKAN.HSP.SetupGhanDirectories()
at CKAN.HSP..ctor(String gameDir, String name, IUser user)
at CKAN.HSPManager.LoadInstancesFromRegistry()
at CKAN.Main..ctor(String[ ] cmdlineArgs, HSPManager mgr, GUIUser user, Boolean showConsole)
at CKAN.CmdLine.MainClass.Gui(HSPManager manager, GuiOptions options, String[ ] args)
at CKAN.CmdLine.MainClass.Main(String[ ] args)

What steps did you take in CKAN?
Nothing, I could not load it.

What did you expect to happen?

What happened instead?

Screenshots:

CKAN error codes (if applicable):

[uejji]

Same issue. I personally resolved on my system by running the previous release and letting it auto update.

[HebaruSan]

Duplicate of #2483, fixed in #2482.