pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-12678-2323_the_Weapon_Shaw.ps) >>/Users/jc/w/tmp/Tune-12678-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2323_the_Weapon_Shaw.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_12678.log 244990 Log file, useful mostly for debugging
Tune-12678-2323_the_Weapon_Shaw.abc 739 ABC music file with the extracted tune(s)
Tune-12678-2323_the_Weapon_Shaw.ps 36922 PostScript
Tune-12678-2323_the_Weapon_Shaw.txt 739 Plain-text file with the extracted tune(s)
Tune-12678-get.log 8661 Log file, useful mostly for debugging
These files should be available for 24 hours.