I released another Quixote beta about a week ago. I think it finally fixes the problem cased by Python 2.6's breakage of the ihooks module. What happened was that the when relative imports were implemented, the ihooks module got forgotten. If you use the 2.6 ihooks module and any package uses a relative import, you lose.
I've fixed the ihooks module in the SVN trunk and it will be fixed in Python 2.7. Quixote 2.7b2 works around the problem by shipping with it's own ihooks module.