pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-18464-waif-7.ps) >>/Users/jc/w/tmp/Tune-18464-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/waifs/waif-7.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-18464-get.log 23111 Log file, useful mostly for debugging
Tune-18464-waif-7.abc 11934 ABC music file with the extracted tune(s)
Tune-18464-waif-7.ps 192553 PostScript
Tune-18464-waif-7.txt 11934 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.