pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7550-hnr8.ps) >>/Users/jc/w/tmp/Tune-7550-get.log 2>&1" returned status 256
http://norbeck.nu/abc/i/hnr8.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_75502.log 96583 Log file, useful mostly for debugging
Form_75500.log 859 Log file, useful mostly for debugging
Tune-7550-get.log 3994 Log file, useful mostly for debugging
Tune-7550-hnr8.abc 323 ABC music file with the extracted tune(s)
Tune-7550-hnr8.ps 35058 PostScript
Tune-7550-hnr8.txt 323 Plain-text file with the extracted tune(s)
Tune-75504-get.log 4554 Log file, useful mostly for debugging
Tune-75508-Irish6.abc 299 ABC music file with the extracted tune(s)
Tune-75508-Irish6.txt 299 Plain-text file with the extracted tune(s)
Tune-75508-get.log 2963 Log file, useful mostly for debugging
These files should be available for 24 hours.