pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57856-alltunes.ps) >>/Users/jc/w/tmp/Tune-57856-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1803/Bland_Weller/alltunes.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_57856.log 281520 Log file, useful mostly for debugging
Tune-57856-alltunes.abc 16681 ABC music file with the extracted tune(s)
Tune-57856-alltunes.ps 128237 PostScript
Tune-57856-alltunes.txt 16681 Plain-text file with the extracted tune(s)
Tune-57856-get.log 18725 Log file, useful mostly for debugging
These files should be available for 24 hours.