pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-65378-60_Quoz.ps) >>/Users/jc/w/tmp/Tune-65378-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1791/Thompson/60_Quoz.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_65378.log 667898 Log file, useful mostly for debugging
Tune-65378-60_Quoz.abc 742 ABC music file with the extracted tune(s)
Tune-65378-60_Quoz.ps 33903 PostScript
Tune-65378-60_Quoz.txt 742 Plain-text file with the extracted tune(s)
Tune-65378-get.log 4376 Log file, useful mostly for debugging
These files should be available for 24 hours.