pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-97079-1242_Greigs_Pipes.ps) >>/Users/jc/w/tmp/Tune-97079-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/1242_Greigs_Pipes.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_97079.log 879 Log file, useful mostly for debugging
Tune-97079-1242_Greigs_Pipes.abc 1134 ABC music file with the extracted tune(s)
Tune-97079-1242_Greigs_Pipes.ps 42343 PostScript
Tune-97079-1242_Greigs_Pipes.txt 1134 Plain-text file with the extracted tune(s)
Tune-97079-get.log 4569 Log file, useful mostly for debugging
These files should be available for 24 hours.