pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-87740-OpenHymnal2011.ps) >>/Users/jc/w/tmp/Tune-87740-get.log 2>&1" returned status 256
http://openhymnal.org/OpenHymnal2011.10.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-87740-OpenHymnal2011.abc 2835 ABC music file with the extracted tune(s)
Tune-87740-OpenHymnal2011.ps 45023 PostScript
Tune-87740-OpenHymnal2011.txt 2835 Plain-text file with the extracted tune(s)
Tune-87740-get.log 7919 Log file, useful mostly for debugging
These files should be available for 24 hours.