pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-99148-2233_the_Drummer.ps) >>/Users/jc/w/tmp/Tune-99148-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2233_the_Drummer.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_99148.log 1277665 Log file, useful mostly for debugging
Tune-99148-2233_the_Drummer.abc 898 ABC music file with the extracted tune(s)
Tune-99148-2233_the_Drummer.ps 37229 PostScript
Tune-99148-2233_the_Drummer.txt 898 Plain-text file with the extracted tune(s)
Tune-99148-get.log 4548 Log file, useful mostly for debugging
These files should be available for 24 hours.