Error after updating to 8.4

[clinerh]

I downloaded the new 8.4 version and installed it. Now my LaunchBox won't launch at all. If I try to launch BigBox or Next they both come up with an error for "illegal characters in path". What to I need to do to fix this?

 

Illegal characters in path.

App:     Big Box
Version: 8.4
Type:    System.ArgumentException
Site:    Void CheckInvalidPathChars(System.String, Boolean)
Source:  mscorlib

   at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)
   at System.IO.Path.Combine(String path1, String path2, String path3)
   at ()
   at Unbroken.LaunchBox.BackgroundUpdater.GetUpdateStatusFile()
   at Unbroken.LaunchBox.Wpf.BigBox.App..ctor()
   at ()
   at Unbroken.LaunchBox.Wpf.BigBox.BigBoxProgram.Main()