Complex formula used to work, now unknown error (due to complexity of table / database?)

Are any of these Lookup fields?
If so, you might be able to save your formula by embedding them inside a “join()” function:

join(field(‘Organization’),‘’)

Explanation at the bottom of this page: Formula field reference // Baserow
from this issue:Boolean functions and fields - #2 by frederikdc

I just encountered a similar problem (except the cell was just blank, no error message), and that fixed it for me.