pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-32168-3342_the_Celebrated_German_Minuet.ps) >>/Users/jc/w/tmp/Tune-32168-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/3342_the_Celebrated_German_Minuet.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_32168.log 284330 Log file, useful mostly for debugging
Tune-32168-3342_the_Celebrated_German_Minuet.abc 3252 ABC music file with the extracted tune(s)
Tune-32168-3342_the_Celebrated_German_Minuet.ps 68995 PostScript
Tune-32168-3342_the_Celebrated_German_Minuet.txt 3252 Plain-text file with the extracted tune(s)
Tune-32168-get.log 4979 Log file, useful mostly for debugging
These files should be available for 24 hours.