Hi, I recently used farfar2 to predict some RNA structures, but it seems that the longest RNA sequence that would succeed is beneath around 500-600 nt. When I submit sequences with 1800, 2000 or 7500 nt, they failed with returning "No output silent files were produced in the FARFAR2 step; please double-check your inputs!", and I couldn't figure out why. So I wonder is there a limitation of RNA length or size when using farfar2 to predict structures(which I've searched and not found yet), or I just made other mistakes somewhere else. Thanks a lot!