pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38240-B20.ps) >>/Users/jc/w/tmp/Tune-38240-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/AnselmLingnau/sets/B20.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
Coll_38240.log 249279 Log file, useful mostly for debugging
Tune-38240-B20.abc 520 ABC music file with the extracted tune(s)
Tune-38240-B20.ps 37124 PostScript
Tune-38240-B20.txt 520 Plain-text file with the extracted tune(s)
Tune-38240-get.log 4254 Log file, useful mostly for debugging
These files should be available for 24 hours.