I was pulling out my hair, searching for a fix to the "Unspecified Error" we were getting when changing content in the Center-Region of our App.
The "StartPage" of the App is a Portal in the Center-Region which is then removed and replaced by a GridPanel in the center region.
The unspecified error popped up on resizing columns in this grid.
Diff'ing the Portal.txt against the Portal.js from SDK 2.2.1 i found out that the Line
in the "unreg"-Function at the File's Bottom
Ext.dd.ScrollManager.unregister( this.portal.body );
is commented out in the current 2.2.1 SDK but has no comment in watrboys "Portal.txt"
and removeing the Comment made the column resize work again!
It seems to work fine so far and all, but i'd really appreciate if someone could clarify what the reason was to comment out that line in the 2.2.1 SDK.. I guess there was a good reason to do so?