pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-61809-Irish_Trot.ps) >>/Users/jc/w/tmp/Tune-61809-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnWalsh/Irish_Trot.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_61809.log 984 Log file, useful mostly for debugging
Tune-61809-Irish_Trot.abc 2478 ABC music file with the extracted tune(s)
Tune-61809-Irish_Trot.ps 35448 PostScript
Tune-61809-Irish_Trot.txt 2478 Plain-text file with the extracted tune(s)
Tune-61809-get.log 4384 Log file, useful mostly for debugging
These files should be available for 24 hours.