Seems that newer versions of Apple Mac OSX (including Maverics) now automatically open BPAV files as FOLDERS (before you had to manually open the package to retrive MP4)... but this is giving me problems with SONY CLIP BROWSER software.. At least.. This is what I think... Is anybody else having the same problem?

Footage is still there but being the BPAV package (used to be a single file) now recognisd as a folder... Sony software crashes

Might simply be that Sony has not yet released a Content Browser version for Mavericks. You might need to wait until they do. SxS drivers are known not to work with Mavericks at the moment.

SxS drivers are known not to work with Mavericks at the moment.

Working for me on a brand new MacBook Pro Retina...