[Users] problem with gridPanel and TabPanel

[François Boussuges]

Hello, I have a gridPanel synchronized with my wfs Layer, to the 
beginning this grid was in a Ext.Panel, all was good.
But yesterday, I have try to put my grid in a Ext.TabPanel and I have a 
problem, the synchronisation don't work, FireBug return me this error:

this.grid is undefined
var swfobject=function(){var 
E="undefi...);Ext.grid.GroupingView.GROUP_ID=1000;

Have you the same problem in your applications and have you an idea to 
resolve this or substitute the TabPanel (I need a layout whit tab or 
button)?

Thank you!