pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-88590-FainIWould.ps) >>/Users/jc/w/tmp/Tune-88590-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/FainIWould.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-88590-FainIWould.abc 283 ABC music file with the extracted tune(s)
Tune-88590-FainIWould.ps 33312 PostScript
Tune-88590-FainIWould.txt 283 Plain-text file with the extracted tune(s)
Tune-88590-get.log 8979 Log file, useful mostly for debugging
Tune-88590-x1.abc 150 ABC music file with the extracted tune(s)
Tune-88590-x1.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-88590-x1.ps 30882 PostScript
Tune-88590-x1.txt 150 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.