pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-61528-MSRPB.ps) >>/Users/jc/w/tmp/Tune-61528-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MSRPB.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_61528.log 659465 Log file, useful mostly for debugging
Tune-61528-MSRPB.abc 6650 ABC music file with the extracted tune(s)
Tune-61528-MSRPB.ps 71041 PostScript
Tune-61528-MSRPB.txt 6650 Plain-text file with the extracted tune(s)
Tune-61528-get.log 7259 Log file, useful mostly for debugging
These files should be available for 24 hours.