pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9866-MrJSSkinnerTeacherOfDancingBanchory.ps) >>/Users/jc/w/tmp/Tune-9866-get.log 2>&1" returned status 256
http://www.math.mun.ca/~bshawyer/straths/MrJSSkinnerTeacherOfDancingBanchory.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_98662.log 264789 Log file, useful mostly for debugging
Form_98664.log 828 Log file, useful mostly for debugging
Tune-9866-MrJSSkinnerTeacherOfDancingBanchory.abc 396 ABC music file with the extracted tune(s)
Tune-9866-MrJSSkinnerTeacherOfDancingBanchory.ps 38963 PostScript
Tune-9866-MrJSSkinnerTeacherOfDancingBanchory.txt 396 Plain-text file with the extracted tune(s)
Tune-9866-get.log 10717 Log file, useful mostly for debugging
Tune-98661-get.log 4404 Log file, useful mostly for debugging
Tune-98663-get.log 4316 Log file, useful mostly for debugging
Tune-98664-get.log 3090 Log file, useful mostly for debugging
These files should be available for 24 hours.