I have a workbook that contains custom Functions added via an Add-in. After the custom functions are calculated for the first time I can make a change to my data (functions are pulling info from an SQL DB) and press F9 and it will recalculate the functions. If I make another change to my data I can not get Fp nor Ctl+Alt_F9 to recalc the functions. I only seem to be able to get F9 to work again if I insert a row in the worksheet within the existing rows that have functions.