pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77034-thou_swell.ps) >>/Users/jc/w/tmp/Tune-77034-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/jazz/thou_swell.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-77034-get.log 6885 Log file, useful mostly for debugging
Tune-77034-thou_swell.abc 1669 ABC music file with the extracted tune(s)
Tune-77034-thou_swell.ps 43570 PostScript
Tune-77034-thou_swell.txt 1669 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.