Same problem here.
My "tools" toolbar is customized, I don't have any "quickpreview" button, so when I run kile the toolbar is shown empty!!! very annoying.
In order to show the toolbar, I follow the same procedure of ptitpoul.
On the other side, if I do: right click on toolbar -> toolbars -> tools (so that the toolbar disappears), and then again right click on toolbar -> toolbars -> tools, the toolbar appears empty again.
Same problem here.
My "tools" toolbar is customized, I don't have any "quickpreview" button, so when I run kile the toolbar is shown empty!!! very annoying.
In order to show the toolbar, I follow the same procedure of ptitpoul.
On the other side, if I do: right click on toolbar -> toolbars -> tools (so that the toolbar disappears), and then again right click on toolbar -> toolbars -> tools, the toolbar appears empty again.
same version: 1:2.1.0~ svn1014763beta2 -1ubuntu1