pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-49491-GreenGarters_PLFD1670_194.ps) >>/Users/jc/w/tmp/Tune-49491-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/GreenGarters_PLFD1670_194.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-49491-GreenGarters_PLFD1670_194.abc 390 ABC music file with the extracted tune(s)
Tune-49491-GreenGarters_PLFD1670_194.ps 33519 PostScript
Tune-49491-GreenGarters_PLFD1670_194.txt 390 Plain-text file with the extracted tune(s)
Tune-49491-get.log 5425 Log file, useful mostly for debugging
These files should be available for 24 hours.