pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78350-1805_Thompson.ps) >>/Users/jc/w/tmp/Tune-78350-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1805_Thompson.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-78350-1805_Thompson.abc 19266 ABC music file with the extracted tune(s)
Tune-78350-1805_Thompson.ps 127559 PostScript
Tune-78350-1805_Thompson.txt 19266 Plain-text file with the extracted tune(s)
Tune-78350-get.log 64642 Log file, useful mostly for debugging
These files should be available for 24 hours.