pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-83795-RafesWaltz.ps) >>/Users/jc/w/tmp/Tune-83795-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/England/RafesWaltz.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_83795.log 872020 Log file, useful mostly for debugging
Tune-83795-RafesWaltz.abc 1596 ABC music file with the extracted tune(s)
Tune-83795-RafesWaltz.ps 40612 PostScript
Tune-83795-RafesWaltz.txt 1596 Plain-text file with the extracted tune(s)
Tune-83795-get.log 4347 Log file, useful mostly for debugging
These files should be available for 24 hours.