Still some problems with the view. OpenErp 6.1 does not allow use of icons in a hierarchical tree view. So view for displaying categories cannot be shared any longer. Created a new view for displaying the tree structure. Also reverted earlier change to __openerp__.py file. The report was loaded after all in another xml file. Attached patch should be the final resolution (I deleted the earlier patches).
Still some problems with the view. OpenErp 6.1 does not allow use of icons in a hierarchical tree view. So view for displaying categories cannot be shared any longer. Created a new view for displaying the tree structure. Also reverted earlier change to __openerp__.py file. The report was loaded after all in another xml file. Attached patch should be the final resolution (I deleted the earlier patches).