PyPRP limitations?

I have on occasion be successful in loading an age into uru from blender using the PyPRP plugin, but when i change anything about the age and then export it over the old copy I get error messages or a Python Scripting error. This is very irritating. I see why there are so few that are involved in this endeavor. I have included a copy of the error message in the python window. Thanks in advance for helping me again.