So since updating to version 2.6.2, I can no longer run any game for any system through LaunchBox. I checked LB with other emulators and it still works just fine. It's only BH. LB currently has no special instructions to run BH then the ROM. It has always just worked before. So did how BH accepts commands to run the exe followed by the ROM change? When I do run a game I get this:
System.NotSupportedException: The given path's format is not supported.
at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath)
at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath)
at System.IO.FileInfo.Init(String fileName, Boolean checkHost)
at BizHawk.Common.PathExtensions.PathExtensions.MakeAbsolute(String path, String cwd)
at BizHawk.Client.EmuHawk.MainForm..ctor(Config config, IGL gl, Action`1 updateGlobalSound, String args, IMovieSession& movieSession)
at BizHawk.Client.EmuHawk.Program.SubMain(String args)