pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-30684-0594_DURANGS_HORNPIPE.ps) >>/Users/jc/w/tmp/Tune-30684-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/0594_DURANGS_HORNPIPE.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-30684-0594_DURANGS_HORNPIPE.abc 572 ABC music file with the extracted tune(s)
Tune-30684-0594_DURANGS_HORNPIPE.ps 35910 PostScript
Tune-30684-0594_DURANGS_HORNPIPE.txt 572 Plain-text file with the extracted tune(s)
Tune-30684-endo.abc 100 ABC music file with the extracted tune(s)
Tune-30684-endo.pdf 2217 Portable Data Format
Tune-30684-endo.ps 6 PostScript
Tune-30684-endo.txt 100 Plain-text file with the extracted tune(s)
Tune-30684-get.log 9535 Log file, useful mostly for debugging
These files should be available for 24 hours.