pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6594-CatharsisBm.ps) >>/Users/jc/w/tmp/Tune-6594-get.log 2>&1" returned status 256
http://www.gulfweb.net/rlwalker/abc/CatharsisBm.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_65942.log 254919 Log file, useful mostly for debugging
Tune-6594-CatharsisBm.abc 596 ABC music file with the extracted tune(s)
Tune-6594-CatharsisBm.ps 36701 PostScript
Tune-6594-CatharsisBm.txt 596 Plain-text file with the extracted tune(s)
Tune-6594-get.log 4446 Log file, useful mostly for debugging
Tune-65942-get.log 4051 Log file, useful mostly for debugging
Tune-65948-get.log 21534 Log file, useful mostly for debugging
These files should be available for 24 hours.