pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4833-hnmarch0.ps) >>/Users/jc/w/tmp/Tune-4833-get.log 2>&1" returned status 256
http://norbeck.nu/abc/i/hnmarch0.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_48330.log 131917 Log file, useful mostly for debugging
Coll_48331.log 267609 Log file, useful mostly for debugging
Coll_48333.log 263379 Log file, useful mostly for debugging
Find_4833.log 1494 Log file, useful mostly for debugging
Tune-4833-get.log 17202 Log file, useful mostly for debugging
Tune-4833-hnmarch0.abc 356 ABC music file with the extracted tune(s)
Tune-4833-hnmarch0.ps 37019 PostScript
Tune-4833-hnmarch0.txt 356 Plain-text file with the extracted tune(s)
Tune-48335-get.log 3122 Log file, useful mostly for debugging
These files should be available for 24 hours.