pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8716-proto.ps) >>/Users/jc/w/tmp/Tune-8716-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1770/Longman_Cotillons/proto.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_87160.log 469791 Log file, useful mostly for debugging
Coll_87164.log 264661 Log file, useful mostly for debugging
Coll_87166.log 136998 Log file, useful mostly for debugging
Coll_87168.log 261851 Log file, useful mostly for debugging
List87162.log 164 Log file, useful mostly for debugging
Tune-8716-get.log 9797 Log file, useful mostly for debugging
Tune-8716-proto.abc 775 ABC music file with the extracted tune(s)
Tune-8716-proto.ps 31092 PostScript
Tune-8716-proto.txt 775 Plain-text file with the extracted tune(s)
Tune-87162-get.log 4680 Log file, useful mostly for debugging
These files should be available for 24 hours.