When in So-A and entering a new Sales Order with a new Item.  I reach the class section, hit F2 to do a lookup and in the field right before the list comes up I get ".T." then the list pops up.  From this point it does not matter what I do this item will not save nor will the items I have entered into the sales order.  Now this is avoidable by typing in the class code without doing the lookup search and there is no problem.  That works fine, but some of our people do not know all the class codes by heart, especially the ones that we do use as often.