pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16441-BlackSheepJig.ps) >>/Users/jc/w/tmp/Tune-16441-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ryan-cole/Tunes/BlackSheepJig.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-16441-BlackSheepJig.abc 391 ABC music file with the extracted tune(s)
Tune-16441-BlackSheepJig.ps 33672 PostScript
Tune-16441-BlackSheepJig.txt 391 Plain-text file with the extracted tune(s)
Tune-16441-JeanWhite_HRJCD.abc 152 ABC music file with the extracted tune(s)
Tune-16441-JeanWhite_HRJCD.pdf 2217 Portable Data Format
Tune-16441-JeanWhite_HRJCD.ps 6 PostScript
Tune-16441-JeanWhite_HRJCD.txt 152 Plain-text file with the extracted tune(s)
Tune-16441-get.log 14522 Log file, useful mostly for debugging
These files should be available for 24 hours.