pycontrol pool.add_member problem

After further experimentation, it would appear that somehow the 'address' is not being parsed in my call and the error message is referring to the fact that it can't find the element named address in my list. I also realized that I was using a 64bit version of Python 2.7.2 and that all the examples were done with Python 2.6.4. Is there are a syntax difference between the 2 versions?