Originally Posted by itimpi
Are you trying to change the date in the main calibre window or in the edit metadata dialog? I use the latter and have no problems editing the date although I do it by editing it manually rather than via the pop-up calendar.
Also if you do not want the exact date you might want to take advantage of the 'tweak' option that allows the displayed format to be set for this date - I have mine set to show just the year which is all I am interested in and which also makes editing it much easier and faster.
The year is all I want too.... where is the tweak option, please?