pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-51780-4121-Aitken_Drum.ps) >>/Users/jc/w/tmp/Tune-51780-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CSR/4121-Aitken_Drum.abc1.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_51780.log 263256 Log file, useful mostly for debugging
Tune-51780-4121-Aitken_Drum.abc 1125 ABC music file with the extracted tune(s)
Tune-51780-4121-Aitken_Drum.ps 39112 PostScript
Tune-51780-4121-Aitken_Drum.txt 1125 Plain-text file with the extracted tune(s)
Tune-51780-get.log 4567 Log file, useful mostly for debugging
These files should be available for 24 hours.