Hi, i tried to create a song without gtp tab and at the end this message comes ! I tried :song>rocksmith>correct chord fingering and check fret positions but no errors ! Doesn't the fact that i created on real guitar and not real guitar 22 a prob ? Thx in advance for the answer ! 

There may be some special case where the Rocksmith export is malfunctioning during save.  Make sure you're using the latest hotfix (9-26-2020), and if the error still occurs during save, please send me the project (.eof) file for testing.