CKAN wont download

[More_Heat_Shields]

Recently I cleaned my computer and got rid of all my mods. I tried to redownload ckan but it opens with a message:

Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
   at CKAN.GUIUser.DisplayMessage(String message, Object[] args)
   at CKAN.KSP.SetupCkanDirectories()
   at CKAN.KSP..ctor(String gameDir, String name, IUser user)
   at CKAN.KSPManager.LoadInstancesFromRegistry()
   at CKAN.Main..ctor(String[] cmdlineArgs, KSPManager mgr, GUIUser user, Boolean showConsole)
   at CKAN.GUI.Main_(String[] args, KSPManager manager, Boolean showConsole)
   at CKAN.CmdLine.MainClass.Main(String[] args)

I was wondering if anyone knows how to fix this.
 

[Gargamel]

You are best off asking in the CKAN thread, where all the CKAN gurus hang out.    But maybe @HebaruSan can direct your question better. 

[HebaruSan]

Details here, including a suggestion for a workaround:

• https://github.com/KSP-CKAN/CKAN/issues/2483
• https://github.com/KSP-CKAN/CKAN/pull/2482

[Xd the great]

Or just press on ckan's files, click delete, and empty recycle bin.