I read the forums all the time, probably more then I should. Unfortunately I do not have the time to work with the code that I once did as I recover.
As for that link, that is a VGA Dev build. It is based on source code from Brian that was never released as a binary I believe. I think he had some syntax changes in it he never fully fleshed out.
As for your Script 45 Issue if I remember his comments correctly, Brian had something hackish in his code about a maximum number of scripts and garbage data, and that he never expected anyone would hit that.
I think someone named Omar had put SCI Companion it on GitHub. Maybe he has something more updated, or could look into the problem.