CGRID file was not written

“Might” be something wrong with the emissions? I think you’ve shown that pretty conclusively! The weird thing is that there is something so catastrophically wrong that it is crashing your model run rather than aborting with an error message. That is unusual.

What is the output of ncdump -h <filename>? Are you able to visualize the file in ncview or VERDI? What if you use m3stat on the file?