pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73843-10521_Tweed_Side.ps) >>/Users/jc/w/tmp/Tune-73843-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ERM/10521_Tweed_Side.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_73843.log 149255 Log file, useful mostly for debugging
Tune-73843-10521_Tweed_Side.abc 681 ABC music file with the extracted tune(s)
Tune-73843-10521_Tweed_Side.ps 37550 PostScript
Tune-73843-10521_Tweed_Side.txt 681 Plain-text file with the extracted tune(s)
Tune-73843-get.log 13736 Log file, useful mostly for debugging
These files should be available for 24 hours.