pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7535-Singles.ps) >>/Users/jc/w/tmp/Tune-7535-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/SudburyAncients/_/Singles.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_75350.log 138572 Log file, useful mostly for debugging
Find_75358.log 1415 Log file, useful mostly for debugging
Tune-7535-Singles.abc 389 ABC music file with the extracted tune(s)
Tune-7535-Singles.ps 34362 PostScript
Tune-7535-Singles.txt 389 Plain-text file with the extracted tune(s)
Tune-7535-get.log 4275 Log file, useful mostly for debugging
Tune-75353-get.log 3146 Log file, useful mostly for debugging
These files should be available for 24 hours.