pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85706-072_les_Capacins_Maidons.ps) >>/Users/jc/w/tmp/Tune-85706-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/SCAJMR/072_les_Capacins_Maidons.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_85706.log 11640 Log file, useful mostly for debugging
Tune-85706-072_les_Capacins_Maidons.abc 687 ABC music file with the extracted tune(s)
Tune-85706-072_les_Capacins_Maidons.ps 34700 PostScript
Tune-85706-072_les_Capacins_Maidons.txt 687 Plain-text file with the extracted tune(s)
Tune-85706-get.log 4842 Log file, useful mostly for debugging
These files should be available for 24 hours.