pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8192-B20.ps) >>/Users/jc/w/tmp/Tune-8192-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
Tune-8192-B20.abc 502 ABC music file with the extracted tune(s)
Tune-8192-B20.ps 37490 PostScript
Tune-8192-B20.txt 502 Plain-text file with the extracted tune(s)
Tune-8192-get.log 5801 Log file, useful mostly for debugging
Tune-81928-get.log 3090 Log file, useful mostly for debugging
Tune-81929-get.log 1726 Log file, useful mostly for debugging
These files should be available for 24 hours.