I have a project that I can not get all the units to calculate. I have check all units and they all have their catalogue numbers entered. Then I thaught... There are 2 minders in this project.. My theory is that the minders are the units not calculating... I am using catalogue number 5200CU2 for these. Am I correct ?? if not is they any way to work out what these 2 units are ??? If so can we get 5200CU2 addedd to the calculation Database Charles