pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85828-tune-333-manchester-ricketts-hornpipe.ps) >>/Users/jc/w/tmp/Tune-85828-get.log 2>&1" returned status 256
http://lesters-tune-a-day.blogspot.co.uk/2013/07/tune-333-manchester-ricketts-hornpipe.html

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_85828.log 139782 Log file, useful mostly for debugging
Tune-85828-get.log 0 Log file, useful mostly for debugging
Tune-85828-tune-333-manchester-ricketts-hornpipe.abc 0 ABC music file with the extracted tune(s)
Tune-85828-tune-333-manchester-ricketts-hornpipe.ps 0 PostScript
These files should be available for 24 hours.