pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-27800-Douglas_C3.ps) >>/Users/jc/w/tmp/Tune-27800-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/Douglas_C3.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Coll_27800.log 1152620 Log file, useful mostly for debugging
Tune-27800-Douglas_C3.abc 503 ABC music file with the extracted tune(s)
Tune-27800-Douglas_C3.ps 35261 PostScript
Tune-27800-Douglas_C3.txt 503 Plain-text file with the extracted tune(s)
Tune-27800-get.log 4402 Log file, useful mostly for debugging
These files should be available for 24 hours.