pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75503-B11.ps) >>/Users/jc/w/tmp/Tune-75503-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/AnselmLingnau/sets/B11.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Form_75503.log 852 Log file, useful mostly for debugging
Tune-75503-B11.abc 551 ABC music file with the extracted tune(s)
Tune-75503-B11.ps 38992 PostScript
Tune-75503-B11.txt 551 Plain-text file with the extracted tune(s)
Tune-75503-get.log 4282 Log file, useful mostly for debugging
These files should be available for 24 hours.