Philippe wrote:

FWIW, that ConfigurationOfSeaside3 leads to all kinds of problems when coupled with MagritteMagic and TwitterBoostrap... The fact that those are loading Seaside30 on their own isn't helping... That name change may not have been the best thing (keeping 30 would have been better IMV).

You might want to compare with the QCMagritte build on CI. That works with TwitterBootstrap. Stephan