pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42211-191_John_Peel.ps) >>/Users/jc/w/tmp/Tune-42211-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/191_John_Peel.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-42211-191_John_Peel.abc 1319 ABC music file with the extracted tune(s)
Tune-42211-191_John_Peel.ps 38122 PostScript
Tune-42211-191_John_Peel.txt 1319 Plain-text file with the extracted tune(s)
Tune-42211-all.abc 174 ABC music file with the extracted tune(s)
Tune-42211-all.pdf 2217 Portable Data Format
Tune-42211-all.ps 6 PostScript
Tune-42211-all.txt 174 Plain-text file with the extracted tune(s)
Tune-42211-get.log 9409 Log file, useful mostly for debugging
These files should be available for 24 hours.