Using the formula below in combination with predecessors (FS -5d) I get an intermittent #blocked error. Sometimes when I make a change (add a date / change predecessor) it goes away. I can make a change, undo the change, and the error is gone. What am I missing?
=IF(COUNTIF(CHILDREN(), "Red") > 0, "Red", IF(COUNTIF(CHILDREN(), "Yellow") > 0, "Yellow", IF(COUNTIF(CHILDREN(), "Green") > 0, "Green", IF(COUNTIF(CHILDREN(), "Update") >= 1, "Update", IF(COUNTIF(CHILDREN(), "Gray") = COUNT(CHILDREN(Status1334)), "Gray", "TBD")))))