pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90286-134.ps) >>/Users/jc/w/tmp/Tune-90286-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/134=O_No_John-V2.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-90286-134.abc 2206 ABC music file with the extracted tune(s)
Tune-90286-134.ps 36225 PostScript
Tune-90286-134.txt 2206 Plain-text file with the extracted tune(s)
Tune-90286-get.log 4404 Log file, useful mostly for debugging
These files should be available for 24 hours.