X:1 not found in http://www.math.mun.ca/~bshawyer/englishabc/Dressed Ship.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6485-Dressed.ps) >>/Users/jc/w/tmp/Tune-6485-get.log 2>&1" returned status 256
http://www.math.mun.ca/~bshawyer/englishabc/Dressed Ship.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
Coll_64857.log 137362 Log file, useful mostly for debugging
Form_64859.log 729 Log file, useful mostly for debugging
Tune-6485-Dressed.abc 0 ABC music file with the extracted tune(s)
Tune-6485-Dressed.ps 6 PostScript
Tune-6485-Dressed.txt 0 Plain-text file with the extracted tune(s)
Tune-6485-get.log 4003 Log file, useful mostly for debugging
Tune-64852-get.log 3322 Log file, useful mostly for debugging
Tune-64854-get.log 2688072 Log file, useful mostly for debugging
Tune-64856-get.log 3184 Log file, useful mostly for debugging
These files should be available for 24 hours.