pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-40299-08Black.ps) >>/Users/jc/w/tmp/Tune-40299-get.log 2>&1" returned status 256
http://www.campin.me.uk/Flute/Webrelease/Flute/08Black/08Black.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-40299-08Black.abc 261 ABC music file with the extracted tune(s)
Tune-40299-08Black.ps 34944 PostScript
Tune-40299-08Black.txt 261 Plain-text file with the extracted tune(s)
Tune-40299-get.log 4305 Log file, useful mostly for debugging
These files should be available for 24 hours.