pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-46452-Moving_Cloud_1.ps) >>/Users/jc/w/tmp/Tune-46452-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Perron-Miller/Moving_Cloud_1.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-46452-Moving_Cloud_1.abc 448 ABC music file with the extracted tune(s)
Tune-46452-Moving_Cloud_1.ps 36501 PostScript
Tune-46452-Moving_Cloud_1.txt 448 Plain-text file with the extracted tune(s)
Tune-46452-get.log 6393 Log file, useful mostly for debugging
These files should be available for 24 hours.