Screenshot shows that Movie Battles failed to load properly, because this is base JA GUI, and MBII has it's own GUI which is very different from base one.
Right-click on "Jedi Academy" => Properties => Security => give yourself all possible permissions, including all subfolders.
Delete files "cgamex86.dll", "jampgamex86.dll", "uix86.dll" from these folders:
- Jedi Academy\GameData
- Jedi Academy\GameData\base
- Jedi Academy\GameData\MBII
MBII Launcher => Settings => check "Enable logging" => Repair installation.
Post latest log from "Jedi Academy\GameData\MBII_Launcher\logs" here.