I've been fortunate to conduct my opera BUOSO'S GHOST several times. The last time I got to do it, at OperaDelaware, was the first time since it was cleaned up and beautifully rereleased by EC Schirmer. Despite that, there's still an errata list of about 65 items after last week's Florida Grand Opera production. Fortunately, a good percentage of these are getting into cautionary accidentals and very small layout issues, and discrepancies with the piano vocal score. Still, I wouldn't be surprised that I still find some things the next time I do it!