It is probably worth trying sending an email at fanedit•info to let them know it no longer works - they may be able to correct any issues / replace it with a working file.
Q2 (aka thunderclap) is a member on here - so it may also be worth sending him a PM.
There may be some info on the ROTJ Edit in Q2 / thunderclap’s Prequel Trilogy ‘The Fall of the Jedi Trilogy (Released)’ project thread?