pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54836-07_le_Cocu.ps) >>/Users/jc/w/tmp/Tune-54836-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1770/Longman_Cotillons/07_le_Cocu.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-54836-07_le_Cocu.abc 1573 ABC music file with the extracted tune(s)
Tune-54836-07_le_Cocu.ps 37712 PostScript
Tune-54836-07_le_Cocu.txt 1573 Plain-text file with the extracted tune(s)
Tune-54836-140_Keep_it_up.abc 1336 ABC music file with the extracted tune(s)
Tune-54836-140_Keep_it_up.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-54836-140_Keep_it_up.ps 39352 PostScript
Tune-54836-140_Keep_it_up.txt 1336 Plain-text file with the extracted tune(s)
Tune-54836-get.log 10553 Log file, useful mostly for debugging
These files should be available for 24 hours.