Errors loading a ... complex ... package

[ds]

Hi all!

TL;DR:

what's the best way to get started debugging a works-for-Mathematica-package for use with Mathics? is there a good document or chunk of code I should try working with to gain insight on why it's failing to load?

Details:

I'm very interested in trying to use a rather complex Mathematica package with Mathics.

http://rochesterscientific.com/ADM/

I've tried using a few different historical versions of their package, in case that will affect portability to Mathics, but even the earliest version has ... less than obviously helpful errors. The most recent version of their package has completely unreadable errors that seem to crash at the interpreter level (what looks like python callbacks get thrown).

The oldest version of their package yields a large number of "no previous context defined" error messages for most of the sub-packages, but the Graphics package won't load at all. I wouldn't be surprised if that has a straightforward explanation behind it.

I'll probably try all of the available versions of their package in the near future, but I figured I'd ask if anyone has entry-point suggestions for debugging.

Thanks for your time!