pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6703-1103_Monny_Mush.ps) >>/Users/jc/w/tmp/Tune-6703-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CR/1103_Monny_Mush.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_67036.log 165294 Log file, useful mostly for debugging
Find_67031.log 1559 Log file, useful mostly for debugging
Tune-6703-1103_Monny_Mush.abc 1029 ABC music file with the extracted tune(s)
Tune-6703-1103_Monny_Mush.ps 39550 PostScript
Tune-6703-1103_Monny_Mush.txt 1029 Plain-text file with the extracted tune(s)
Tune-6703-get.log 4658 Log file, useful mostly for debugging
Tune-67037-get.log 5556 Log file, useful mostly for debugging
Tune-67038-get.log 9539 Log file, useful mostly for debugging
Tune-67039-get.log 3600 Log file, useful mostly for debugging
These files should be available for 24 hours.