pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73057-33_DA_AULD_RESTING_CHAIR.ps) >>/Users/jc/w/tmp/Tune-73057-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/HaandMeDoonDaFiddle/33_DA_AULD_RESTING_CHAIR.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-73057-33_DA_AULD_RESTING_CHAIR.abc 847 ABC music file with the extracted tune(s)
Tune-73057-33_DA_AULD_RESTING_CHAIR.ps 34860 PostScript
Tune-73057-33_DA_AULD_RESTING_CHAIR.txt 847 Plain-text file with the extracted tune(s)
Tune-73057-get.log 6247 Log file, useful mostly for debugging
These files should be available for 24 hours.