I'll try 1.5.7a ASAP, thanks
EDIT: Appart from the fact that the button's default action is always 'create', even when set to 'show menu' (Actually, it does both on my system, and sometimes manages to make calibre crash with a nifty segfault in QtCore ^^), no encoding issues on my end (iso-8859-15)

(Checked View, Edit, Create, and everything is as it should on my Kindle after a framework restart

).