HI Russ! Welcome! It's great to find more people who are interested in keeping the spirit of AGI alive.
I haven't played through the entire game yet, but I did check out the first room, and also scanned through the source code for both the game and your tools. I too noticed a few things regarding incompatibility along the lines of what Lance has mentioned. I see you based your work on the older version of the AGI specs. Unfortunately those haven't been updated in a LONG time. Since those were written, we've learned a lot more detail about AGI, including file format, interpreter operation, glitches and bugs in both the interpreter and the games that need to be considered, etc. I've fully disassembled all v2/v3 MSDOS AGI interpreters, and documented the results in the WinAGI help file. It's probably better to start there than with the older AGI Specs - at least unless/until someone does a full update of them.
I don't have time to do a detailed analysis of your code, but I'm happy to answer any specific questions you might have about any particular game or interpreter issue. I'm up to my eyeballs in C# code right now, as I'm trying to learn it on the fly while porting WinAGI from VB6 to C#. It's taking a lot of effort to teach this old dog new tricks! If you want to follow along, the repo for the port is available here:
https://github.com/AGKorson/WinAGI-GDS. None of the editors are working yet, but most of the code for handling game files and resources is complete, and so far it seems to be able to open and preview all game resources error free. So you might find some useful code in there. Or maybe not- I'm still quite new to C#, so I'm probably not writing real efficient, clean code yet. but it is (will be) functional.
When I do get around to the editors, I will certainly look at including support for CrafterCMS/AGI.js versions of resources.
Oh, and here's a plug for WinAGI: you can download the latest version here:
http://agiwiki.sierrahelp.com/images/c/c6/WinAGI_2_3_6.zip. If you want to create a full featured AGI game in the old Sierra style, there's no better game development system out there.