pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38531-6970.ps) >>/Users/jc/w/tmp/Tune-38531-get.log 2>&1" returned status 256
http://thesession.org/tunes/6970

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_38531.log 0 Log file, useful mostly for debugging
Tune-38531-6970.abc 257 ABC music file with the extracted tune(s)
Tune-38531-6970.ps 34628 PostScript
Tune-38531-6970.txt 257 Plain-text file with the extracted tune(s)
Tune-38531-get.log 4190 Log file, useful mostly for debugging
These files should be available for 24 hours.