Hi,
just installed version on my test machine. 
Unfortunately the option "Show preview pane" disappeared from option "Mailbox view". 
Anything I can do on this?
Regards
Florian
			
			
			
				Seems to be related to 
save_pref.inc where 'preview_pane' needs to be added.
$whitelist = array(
    'list_cols',
    'collapsed_folders',
    'collapsed_abooks',
    'preview_pane',
);
This does not bring up option, but enable saving of setting
			
			
			
				The preview_pane option was removed in 1.3 and replaced by the new layout option.
You can access the layout settings from the cog/gear icon in the top left corner of the message list.
In version 1.3.1 this option will also be displayed under Preferences > Mailbox View > Main Options > Layout