pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-52191-CNS_v2.ps) >>/Users/jc/w/tmp/Tune-52191-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/IgnatiusSancho/CNS/CNS_v2.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_52191.log 312431 Log file, useful mostly for debugging
Tune-52191-CNS_v2.abc 5207 ABC music file with the extracted tune(s)
Tune-52191-CNS_v2.ps 69137 PostScript
Tune-52191-CNS_v2.txt 5207 Plain-text file with the extracted tune(s)
Tune-52191-get.log 10143 Log file, useful mostly for debugging
These files should be available for 24 hours.