I checked the code I'm using on a 4.6.3 site in to HEAD:
http://cvs.openacs.org/cvs/openacs-4/contrib/packages/resource-list/
I'm not sure this will solve the problem you're having, but I'm hoping it will.
Please let me know if your problems persist, and then I'll delve into fixing it.
I have installed the package with the new code, but there are the same error messages as before.