pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-70840-091_Huntingtower.ps) >>/Users/jc/w/tmp/Tune-70840-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Chappell/091_Huntingtower.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-70840-091_Huntingtower.abc 509 ABC music file with the extracted tune(s)
Tune-70840-091_Huntingtower.ps 34072 PostScript
Tune-70840-091_Huntingtower.txt 509 Plain-text file with the extracted tune(s)
Tune-70840-get.log 4794 Log file, useful mostly for debugging
These files should be available for 24 hours.