So I've just finishd a GP tab,and i can't export it because,when I name the tab and hit save it immediately close the program,and when i open the exported tab (the finishd tab) it says 'there was an error when opening thr guitar pro tab'. I can only save it as a 'gpx' file,but not i can't export it as a 'gp5'.       https://www.dropbox.com/s/4fss9o5pl8v5ki5/Breaking%20Benjamin%20-%20Skin%20v.1.gpx?dl=0   here is the file,maybe you'ill have anoterh result.