pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1414-CR63.ps) >>/Users/jc/w/tmp/Tune-1414-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/CR63.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_14143.log 835 Log file, useful mostly for debugging
Form_14147.log 875 Log file, useful mostly for debugging
Tune-1414-CR63.abc 491 ABC music file with the extracted tune(s)
Tune-1414-CR63.ps 35760 PostScript
Tune-1414-CR63.txt 491 Plain-text file with the extracted tune(s)
Tune-1414-get.log 4519 Log file, useful mostly for debugging
Tune-14141-get.log 3515 Log file, useful mostly for debugging
Tune-14147-get.log 3181 Log file, useful mostly for debugging
These files should be available for 24 hours.