i do have enough space, yes.Did you check whether you have enough space to storage the data?
I've just looked at the history and yes, i also took the 3 months of fnl data and put in a new folder, bookended by 24hrs, and pointed ungrib at that rather than pointing ungrib at the folder that has the entire year of fnl data.This is weird. I don't think ungrib has anything to do with geogrid. Other than the ratio, did you change anything else?