pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-94273-2324_Sailors_Wife.ps) >>/Users/jc/w/tmp/Tune-94273-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2324_Sailors_Wife.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_94273.log 1169480 Log file, useful mostly for debugging
Tune-94273-2324_Sailors_Wife.abc 916 ABC music file with the extracted tune(s)
Tune-94273-2324_Sailors_Wife.ps 36684 PostScript
Tune-94273-2324_Sailors_Wife.txt 916 Plain-text file with the extracted tune(s)
Tune-94273-get.log 4572 Log file, useful mostly for debugging
These files should be available for 24 hours.