pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-71103-Blackbird-G-32-3.ps) >>/Users/jc/w/tmp/Tune-71103-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/session/waltz/Blackbird-G-32-3.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Coll_71103.log 261969 Log file, useful mostly for debugging
Form_71103.log 822 Log file, useful mostly for debugging
Tune-71103-Blackbird-G-32-3.abc 508 ABC music file with the extracted tune(s)
Tune-71103-Blackbird-G-32-3.ps 34521 PostScript
Tune-71103-Blackbird-G-32-3.txt 508 Plain-text file with the extracted tune(s)
Tune-71103-get.log 4498 Log file, useful mostly for debugging
These files should be available for 24 hours.