pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-67544-1831_.ps) >>/Users/jc/w/tmp/Tune-67544-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/1831_.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-67544-1831_.abc 64 ABC music file with the extracted tune(s)
Tune-67544-1831_.ps 6 PostScript
Tune-67544-1831_.txt 64 Plain-text file with the extracted tune(s)
Tune-67544-HillCountryTunes.abc 152 ABC music file with the extracted tune(s)
Tune-67544-HillCountryTunes.pdf 2217 Portable Data Format
Tune-67544-HillCountryTunes.ps 6 PostScript
Tune-67544-HillCountryTunes.txt 152 Plain-text file with the extracted tune(s)
Tune-67544-get.log 12518 Log file, useful mostly for debugging
These files should be available for 24 hours.