pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24415-SSF_Dance.ps) >>/Users/jc/w/tmp/Tune-24415-get.log 2>&1" returned status 256
http://www.scottishfiddlers.com/Sydney/Music/ABC/SSF_Dance.htm

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_24415.log 65264 Log file, useful mostly for debugging
Tune-24415-SSF_Dance.abc 350 ABC music file with the extracted tune(s)
Tune-24415-SSF_Dance.ps 36812 PostScript
Tune-24415-SSF_Dance.txt 350 Plain-text file with the extracted tune(s)
Tune-24415-get.log 4277 Log file, useful mostly for debugging
These files should be available for 24 hours.