pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-70876-Boot_THO4_043.ps) >>/Users/jc/w/tmp/Tune-70876-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Thompson/Boot_THO4_043.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-70876-Boot_THO4_043.abc 398 ABC music file with the extracted tune(s)
Tune-70876-Boot_THO4_043.ps 33888 PostScript
Tune-70876-Boot_THO4_043.txt 398 Plain-text file with the extracted tune(s)
Tune-70876-get.log 4503 Log file, useful mostly for debugging
These files should be available for 24 hours.