pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72063-401_Robinslaw.ps) >>/Users/jc/w/tmp/Tune-72063-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Pringle/401_Robinslaw.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-72063-401_Robinslaw.abc 929 ABC music file with the extracted tune(s)
Tune-72063-401_Robinslaw.ps 41890 PostScript
Tune-72063-401_Robinslaw.txt 929 Plain-text file with the extracted tune(s)
Tune-72063-Kohlers1.abc 145 ABC music file with the extracted tune(s)
Tune-72063-Kohlers1.pdf 2217 Portable Data Format
Tune-72063-Kohlers1.ps 6 PostScript
Tune-72063-Kohlers1.txt 145 Plain-text file with the extracted tune(s)
Tune-72063-get.log 9307 Log file, useful mostly for debugging
These files should be available for 24 hours.