Hi! Have you tried to add mrp module into the depends list of your terp file?
"depends" : ["mrp"], I have had the same problem when trying to extend hr_timesheet_sheet from other classes and I found that solution in this topic http://openerp.com/forum/topic6931.html?highlight=nonetype%20object%20attribute%20columns%20nonetype%20object%20attribute%20columns Regards, Aitzol -------------------- m2f -------------------- -- http://www.openerp.com/forum/viewtopic.php?p=23364#23364 -------------------- m2f -------------------- _______________________________________________ Tinyerp-users mailing list http://tiny.be/mailman/listinfo/tinyerp-users
