pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-61355-The-Trip-to-Brighton.ps) >>/Users/jc/w/tmp/Tune-61355-get.log 2>&1" returned status 256
http://www.singdanceandplay.net/wp-content/uploads/2015/10/The-Trip-to-Brighton.txt

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-61355-The-Trip-to-Brighton.abc 749 ABC music file with the extracted tune(s)
Tune-61355-The-Trip-to-Brighton.ps 35125 PostScript
Tune-61355-The-Trip-to-Brighton.txt 749 Plain-text file with the extracted tune(s)
Tune-61355-get.log 5823 Log file, useful mostly for debugging
These files should be available for 24 hours.