Rex,
I not sure if you've already tried what I'm about to tell you but here it goes, anyway...
When you create your class test them "Organically" in VFP from the command line. Remember, due to the complexity in the Codebood/Mere Mortols it's always easier to debug the problems within VFP. Once you get them working properly in VFP you can compile them into a COM Server.
Some of the stuff you need to do while compiling COM Servers in Mere Mortals Framework is copy the "CLASSES.*" as well as "STRINGS.*" from COMMON30 Directory.
Remember, these are tables needed by the abtract pattern. Let us know if you need anymore help - you've come to the right place.
Hope this helps!