pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90075-net3.ps) >>/Users/jc/w/tmp/Tune-90075-get.log 2>&1" returned status 256
http://www.chrisricker.ca/tunes/net3.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-90075-get.log 4009 Log file, useful mostly for debugging
Tune-90075-net3.abc 338 ABC music file with the extracted tune(s)
Tune-90075-net3.ps 37360 PostScript
Tune-90075-net3.txt 338 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.