pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-55342-HolyroodJ-JC.ps) >>/Users/jc/w/tmp/Tune-55342-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book22/HolyroodJ-JC.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Form_55342.log 764 Log file, useful mostly for debugging
Tune-55342-HolyroodJ-JC.abc 336 ABC music file with the extracted tune(s)
Tune-55342-HolyroodJ-JC.ps 34362 PostScript
Tune-55342-HolyroodJ-JC.txt 336 Plain-text file with the extracted tune(s)
Tune-55342-get.log 4357 Log file, useful mostly for debugging
These files should be available for 24 hours.