pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1038-31991_LES_FARCEURS_VALSE_3.ps) >>/Users/jc/w/tmp/Tune-1038-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/31991_LES_FARCEURS_VALSE_3.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_10380.log 880 Log file, useful mostly for debugging
Form_10386.log 1913 Log file, useful mostly for debugging
Tune-1038-31991_LES_FARCEURS_VALSE_3.abc 746 ABC music file with the extracted tune(s)
Tune-1038-31991_LES_FARCEURS_VALSE_3.ps 35060 PostScript
Tune-1038-31991_LES_FARCEURS_VALSE_3.txt 746 Plain-text file with the extracted tune(s)
Tune-1038-get.log 8763 Log file, useful mostly for debugging
Tune-10384-get.log 4722 Log file, useful mostly for debugging
Tune-10389-get.log 6034 Log file, useful mostly for debugging
These files should be available for 24 hours.