New problem. Whenever I try to load the script for ESB HCenc crashes. The script for ANH still loads fine though. Under info it gets as far as "AVS file opened, Avisynth.dll loaded" =(
I just tried creating the script for ROTJ and it loaded in HCenc fine but ESB keeps crashing it for no reason.
Edit: Figured it out, I took out the whole subtitles section and it loaded.