pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1463-53_Gasconne.ps) >>/Users/jc/w/tmp/Tune-1463-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Feuillet_Essex/FtFIoD/53_Gasconne.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-1463-53_Gasconne.abc 622 ABC music file with the extracted tune(s)
Tune-1463-53_Gasconne.ps 34024 PostScript
Tune-1463-53_Gasconne.txt 622 Plain-text file with the extracted tune(s)
Tune-1463-get.log 13417 Log file, useful mostly for debugging
Tune-14630-get.log 10592 Log file, useful mostly for debugging
Tune-14631-get.log 5447 Log file, useful mostly for debugging
Tune-14636-get.log 4617 Log file, useful mostly for debugging
Tune-14638-get.log 4073 Log file, useful mostly for debugging
These files should be available for 24 hours.