pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5983-CR71.ps) >>/Users/jc/w/tmp/Tune-5983-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Contra/CR71.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_5983.log 142159 Log file, useful mostly for debugging
Coll_59835.log 468800 Log file, useful mostly for debugging
Tune-5983-CR71.abc 1879 ABC music file with the extracted tune(s)
Tune-5983-CR71.ps 44032 PostScript
Tune-5983-CR71.txt 1879 Plain-text file with the extracted tune(s)
Tune-5983-get.log 4244 Log file, useful mostly for debugging
Tune-59830-get.log 4201 Log file, useful mostly for debugging
Tune-59838-get.log 4271 Log file, useful mostly for debugging
These files should be available for 24 hours.