pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42278-Speed_the_Plough_and_Variations.ps) >>/Users/jc/w/tmp/Tune-42278-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/misc/Speed_the_Plough_and_Variations.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
Coll_42278.log 64994 Log file, useful mostly for debugging
Tune-42278-Speed_the_Plough_and_Variations.abc 808 ABC music file with the extracted tune(s)
Tune-42278-Speed_the_Plough_and_Variations.ps 36832 PostScript
Tune-42278-Speed_the_Plough_and_Variations.txt 808 Plain-text file with the extracted tune(s)
Tune-42278-get.log 6496 Log file, useful mostly for debugging
These files should be available for 24 hours.