pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-44216-79_the_Tost.ps) >>/Users/jc/w/tmp/Tune-44216-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Feuillet_Essex/FtFIoD/79_the_Tost.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-44216-79_the_Tost.abc 929 ABC music file with the extracted tune(s)
Tune-44216-79_the_Tost.ps 37010 PostScript
Tune-44216-79_the_Tost.txt 929 Plain-text file with the extracted tune(s)
Tune-44216-get.log 17870 Log file, useful mostly for debugging
These files should be available for 24 hours.