pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-52979-DuchessOfManchestersNewStrathspey.ps) >>/Users/jc/w/tmp/Tune-52979-get.log 2>&1" returned status 256
http://www.math.mun.ca/~bshawyer/straths/DuchessOfManchestersNewStrathspey.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-52979-DuchessOfManchestersNewStrathspey.abc 441 ABC music file with the extracted tune(s)
Tune-52979-DuchessOfManchestersNewStrathspey.ps 39107 PostScript
Tune-52979-DuchessOfManchestersNewStrathspey.txt 441 Plain-text file with the extracted tune(s)
Tune-52979-get.log 5050 Log file, useful mostly for debugging
These files should be available for 24 hours.