pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68909-21592_Camerons_Got_His_Wife_Again.ps) >>/Users/jc/w/tmp/Tune-68909-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Hamilton/HUTB2/21592_Camerons_Got_His_Wife_Again.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_68909.log 65534 Log file, useful mostly for debugging
Sess-68909.log 25165869 Log file, useful mostly for debugging
Tune-68909-21592_Camerons_Got_His_Wife_Again.abc 717 ABC music file with the extracted tune(s)
Tune-68909-21592_Camerons_Got_His_Wife_Again.ps 36380 PostScript
Tune-68909-21592_Camerons_Got_His_Wife_Again.txt 717 Plain-text file with the extracted tune(s)
Tune-68909-get.log 4868 Log file, useful mostly for debugging
These files should be available for 24 hours.