pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5937-oneill_dmoi.ps) >>/Users/jc/w/tmp/Tune-5937-get.log 2>&1" returned status 256
http://music.gordfisch.net/montrealsession/assets/abc/oneill_dmoi.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_59379.log 130707 Log file, useful mostly for debugging
Tune-5937-get.log 4435 Log file, useful mostly for debugging
Tune-5937-oneill_dmoi.abc 338 ABC music file with the extracted tune(s)
Tune-5937-oneill_dmoi.ps 34632 PostScript
Tune-5937-oneill_dmoi.txt 338 Plain-text file with the extracted tune(s)
Tune-59373-get.log 3138 Log file, useful mostly for debugging
Tune-59378-get.log 4177 Log file, useful mostly for debugging
These files should be available for 24 hours.