pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-59074-HughesR.ps) >>/Users/jc/w/tmp/Tune-59074-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/ShropshireMss/HughesR(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-59074-HughesR.abc 265 ABC music file with the extracted tune(s)
Tune-59074-HughesR.ps 34299 PostScript
Tune-59074-HughesR.txt 265 Plain-text file with the extracted tune(s)
Tune-59074-get.log 4353 Log file, useful mostly for debugging
These files should be available for 24 hours.