pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-33550-20121_St_Clairs_March.ps) >>/Users/jc/w/tmp/Tune-33550-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP2/20121_St_Clairs_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_33550.log 264661 Log file, useful mostly for debugging
Form_33550.log 1014 Log file, useful mostly for debugging
Tune-33550-20121_St_Clairs_March.abc 1339 ABC music file with the extracted tune(s)
Tune-33550-20121_St_Clairs_March.ps 43046 PostScript
Tune-33550-20121_St_Clairs_March.txt 1339 Plain-text file with the extracted tune(s)
Tune-33550-get.log 9369 Log file, useful mostly for debugging
These files should be available for 24 hours.