I also tried that solution yesterday, but the download of the .exe file is always blocked, no matter the browser I use. Downloading only the Patcher and putting it into the GameData folder gives the same problem as before.
Edit: It doesnt allow me to upload a .txt file so I will just copy the log here:
===================================================
Movie Battles II AutoUpdater file Created on: 15/12/2018 10:40:39
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Initialising connection to server.
Detected OS Windows. Retrieving Windows Launcher Manifest.
Retrieved 695 bytes
Deserialising manifest.
Deserialised complete. There are 2 records.
Starting backup.
Checking if /MBIILauncher.exe exists in path C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData/
Checking if /MBII_Patcher.dll exists in path C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData/
File found at C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll
Backing file up to C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll.mbbak.
File backed up.
Checking for old configurations.
Previous configurations found.
Old configurations backups found. Deleteing...
Old Configurations Removed.
Backing up C:\Users\juana\AppData\Local/Movie_Battles_Team/ to C:\Users\juana\AppData\Local/Movie_Battles_Team_Backup
Configuration Backup completed.
Backup completed.
Deleting current files.
Begging uninstall of current version
Checking for existance of C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBIILauncher.exe.
Checking for existance of C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll.
File exists. Deleting...
File Deleted
Uninstall completed
Aquiring new files.
Beginning update
Retrieving /MBIILauncher.exe from
Movie Battles II Community. File will be saved to C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBIILauncher.exe
Error occured during download: Error en el servidor remoto: (503) Servidor no disponible.
Stack Trace: en System.Net.WebClient.DownloadFile(Uri address, String fileName)
en AutoUpdate.AutoUpdate.GetUpdateFiles()
Begging uninstall of current version
Checking for existance of C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBIILauncher.exe.
Checking for existance of C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll.
Uninstall completed
Beginning restore.
Checking for existance of C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBIILauncher.exe.mbbak
Checking for existance of C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll.mbbak
File found. Restoring to C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll
Restore completed
Beginning removal of backup files
Checking if file C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBIILauncher.exe.mbbak exists.
Checking if file C:\Program Files (x86)\Steam\steamapps\common\Jedi Academy\GameData//MBII_Patcher.dll.mbbak exists.
File exists. Deleting...
Backup File Deleted
Starting Launcher...
Using path: C:/Program Files (x86)/Steam/steamapps/common/Jedi Academy/GameData/MBIILauncher.exe. Command line:
Error occured starting launcher: El sistema no puede encontrar el archivo especificado
Stack Trace: en System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
en AutoUpdate.Form1.UpdateWorker_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e)