Toolbar customization lost after restart

[MerleOne]

Hi,

I have noticed that when I try to customize the toolbars, for instance my adding a 'close' button on any toolbar, it disappears after I fully quit URPro4.1b (all opened windows/.urd files are closed). Is there a setting to avoid this ? Thanks.

Update : seems to work now, that I apply the customization with only one window open (RTFM...). False alarm...