pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-21672-Prince_Ferdinand.ps) >>/Users/jc/w/tmp/Tune-21672-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/Prince_Ferdinand.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-21672-JamesOswald_CPC-abc1.abc 157 ABC music file with the extracted tune(s)
Tune-21672-JamesOswald_CPC-abc1.pdf 2217 Portable Data Format
Tune-21672-JamesOswald_CPC-abc1.ps 6 PostScript
Tune-21672-JamesOswald_CPC-abc1.txt 157 Plain-text file with the extracted tune(s)
Tune-21672-Prince_Ferdinand.abc 450 ABC music file with the extracted tune(s)
Tune-21672-Prince_Ferdinand.ps 33921 PostScript
Tune-21672-Prince_Ferdinand.txt 450 Plain-text file with the extracted tune(s)
Tune-21672-get.log 9753 Log file, useful mostly for debugging
These files should be available for 24 hours.