pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72836-HighPartOfTheRoad.ps) >>/Users/jc/w/tmp/Tune-72836-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Contra/HighPartOfTheRoad.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-72836-BrideOfKildareReel.abc 611 ABC music file with the extracted tune(s)
Tune-72836-BrideOfKildareReel.pdf 19044 Portable Data Format
Tune-72836-BrideOfKildareReel.ps 38017 PostScript
Tune-72836-BrideOfKildareReel.txt 611 Plain-text file with the extracted tune(s)
Tune-72836-HighPartOfTheRoad.abc 1238 ABC music file with the extracted tune(s)
Tune-72836-HighPartOfTheRoad.ps 42038 PostScript
Tune-72836-HighPartOfTheRoad.txt 1238 Plain-text file with the extracted tune(s)
Tune-72836-get.log 16195 Log file, useful mostly for debugging
These files should be available for 24 hours.