Hi,
This was a formula that used to work and stopped working a few weeks ago - I've been troubleshooting and have found that if I select a range < 130 cells, the countif works (essentially counting how many of the cells there are in that column). But when I select a range larger than that or the entire column, I get an invalid operation error.
Other columns in the sheet work okay but are less complex.
Has anyone had this issue/resolved it somehow?