pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42751-30621_Highland_March.ps) >>/Users/jc/w/tmp/Tune-42751-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP3/30621_Highland_March.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_42751.log 973305 Log file, useful mostly for debugging
Form_42751.log 842 Log file, useful mostly for debugging
Tune-42751-30621_Highland_March.abc 825 ABC music file with the extracted tune(s)
Tune-42751-30621_Highland_March.ps 37906 PostScript
Tune-42751-30621_Highland_March.txt 825 Plain-text file with the extracted tune(s)
Tune-42751-get.log 4837 Log file, useful mostly for debugging
These files should be available for 24 hours.