pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38348-STABLES.ps) >>/Users/jc/w/tmp/Tune-38348-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Stables/STABLES(12-4-16).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-38348-STABLES.abc 444 ABC music file with the extracted tune(s)
Tune-38348-STABLES.ps 34236 PostScript
Tune-38348-STABLES.txt 444 Plain-text file with the extracted tune(s)
Tune-38348-get.log 16978 Log file, useful mostly for debugging
These files should be available for 24 hours.