NRE initializing CKAN folder on argumentless GUI launch

[JJDomino]

Background

CKAN Version:
Latest release
v1.25.2
2321d88

KSP Version:
Steam (last version)

Operating System:
Win10 Pro

Have you made any manual changes to your GameData folder (i.e., not via CKAN)?
No

Problem

What steps did you take in CKAN?
Open ckan.exe

What did you expect to happen?
Installation

What happened instead?
Error and closing ckan.exe

Screenshots:

CKAN error codes (if applicable):

Необработанное исключение: System.NullReferenceException: Ссылка на объект не указывает на экземпляр объекта.
   в CKAN.GUIUser.DisplayMessage(String message, Object[] args)
   в CKAN.KSP.SetupCkanDirectories()
   в CKAN.KSP..ctor(String gameDir, String name, IUser user)
   в CKAN.KSPManager.LoadInstancesFromRegistry()
   в CKAN.Main..ctor(String[] cmdlineArgs, KSPManager mgr, GUIUser user, Boolean showConsole)
   в CKAN.GUI.Main_(String[] args, KSPManager manager, Boolean showConsole)
   в CKAN.CmdLine.MainClass.Main(String[] args)

[HebaruSan]

From @barfingskull on #2481:

---

This happened under Linux Mint 18.3 as well. I had updated mono to the 5.12 version when this happened, but I think the same thing also occurred when I tried the default 4.X version that comes with 18.3.

$ mono ckan.exe 
exception inside UnhandledException handler: Object reference not set to an instance of an object

[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
  at CKAN.GUIUser.DisplayMessage (System.String message, System.Object[] args) [0x00000] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.NullUser.RaiseMessage (System.String message, System.Object[] args) [0x00000] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.KSP.SetupCkanDirectories () [0x000dd] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.KSP..ctor (System.String gameDir, System.String name, CKAN.IUser user) [0x00038] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.KSPManager.LoadInstancesFromRegistry () [0x00060] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.KSPManager..ctor (CKAN.IUser user, CKAN.IWin32Registry win32_registry) [0x00028] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.Main..ctor (System.String[] cmdlineArgs, CKAN.KSPManager mgr, CKAN.GUIUser user, System.Boolean showConsole) [0x00039] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at (wrapper remoting-invoke-with-check) CKAN.Main..ctor(string[],CKAN.KSPManager,CKAN.GUIUser,bool)
  at CKAN.GUI.Main_ (System.String[] args, CKAN.KSPManager manager, System.Boolean showConsole) [0x0003b] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.CmdLine.MainClass.Gui (CKAN.KSPManager manager, CKAN.CmdLine.GuiOptions options, System.String[] args) [0x00008] in <352d74f237564d2e9ff313cc9ac1989e>:0 
  at CKAN.CmdLine.MainClass.Main (System.String[] args) [0x000a1] in <352d74f237564d2e9ff313cc9ac1989e>:0 

Mono JIT compiler version 5.12.0.301 (tarball Wed Jul 25 15:47:18 UTC 2018)

I was able to get CKAN functioning after applying the .deb package, and just running ckan

[HebaruSan]

From @TACHYON-Micah on #2481:

---

I get the same issue on PC. Can't run it.

https://puu.sh/B9xk9/d534aab6bf.png