Hi, This bug occours in 1.3.0 with qt 2.3.1:
Create a new document then open the 'save' or 'save as' dialogs. Type as the filename '~' or '~/' (like browsing to reach the home directory) or '~/file.lyx'. This leads to a crash. Typing '~user' or '~user/file.lyx' works well, though. Regards, Joao.