I have some converted Solton styles that I've tried to load into my PSR740. Most of the time I get disk error. The disks are good and the files are not corrupted. Usually I can manage to load one style on one of the three user styles. Sometimes it loads on 161 other times it will load only on 163. I heard it was something about the Solton styles being larger than the Yamaha styles. Anyone know the answer to this one?