When I talked to my maintenance engineer he said that when they were using the A series PLC's from Mitsubishi they would go in and change from use comments for all programs to only this program or something of that nature. Then the comments would show up correctly but now we are using Q series on most machines and this same tactic does not work. So you don't think it is something to do with the fonts that are loaded? We aren't trying to load the japanese comments but the English comments, but you said that they are different files so perhaps there is a different comment file that we need to find..