Originally Posted by entity
Just installed Calibre 64 bit on my new Win 7 Pro 64 bit machine.
Whenever I select any buttons on the menu, the program freezes.
I have managed to open some menus, ONLY SOMETIMES, if I use the side arrow on the menu button but even this crashes the program after one or two attempts.
I have NEVER been able to open the Preferences, even using the side arrow menu.
You probably have a corrupted font (or a non-font) in the Windows font folder