Have a look in <MBIILauncher Directory>/MBII_Launcher/AutoUpdateLogs/ and post (Or PM me because it might contain your username) the latest log file.
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Movie Battles II AutoUpdater file Created on: 6/7/2018 9:12:37 PM
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Initialising connection to server.
Detected OS Windows. Retrieving Windows Launcher Manifest.
Retrieved 680 bytes
Deserialising manifest.
Deserialised complete. There are 2 records.
Starting backup.
Checking if /MBIILauncher.exe exists in path C:\GOG Games\Star Wars Jedi Knight - Jedi Academy\GameData/
File found at C:\GOG Games\Star Wars Jedi Knight - Jedi Academy\GameData//MBIILauncher.exe
Backing file up to C:\GOG Games\Star Wars Jedi Knight - Jedi Academy\GameData//MBIILauncher.exe.mbbak.
Error occured during backup: The file 'C:\GOG Games\Star Wars Jedi Knight - Jedi Academy\GameData//MBIILauncher.exe.mbbak' already exists.
Stack Trace: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite)
at System.IO.File.Copy(String sourceFileName, String destFileName)
at AutoUpdate.AutoUpdate.BackupCurrent()
Beginning removal of backup files
Checking if file C:\GOG Games\Star Wars Jedi Knight - Jedi Academy\GameData//MBIILauncher.exe.mbbak exists.
File exists. Deleting...
Error occured during removing backup: Access to the path 'C:\GOG Games\Star Wars Jedi Knight - Jedi Academy\GameData\MBIILauncher.exe.mbbak' is denied.
Stack Trace: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.Delete(String path)
at AutoUpdate.AutoUpdate.DeleteBackupFiles()
Starting Launcher...
Using path: C:/GOG Games/Star Wars Jedi Knight - Jedi Academy/GameData/MBIILauncher.exe. Command line:
Error occured starting launcher: The operation was canceled by the user
Stack Trace: at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
at AutoUpdate.Form1.UpdateWorker_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e)