Unfortunately not long after the first movie came out some component company on the back end had financial troubles and the rights to the movie got caught up in an ownership battle or something like that. It’s been a while since I read about why the sequel was never made even though everyone seemed primed to do it so my details may be fuzzy on it but it had something to do with the rights halting the project for a long time, like 15-20 years or something like that.