pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-31596-8439.ps) >>/Users/jc/w/tmp/Tune-31596-get.log 2>&1" returned status 256
http://thesession.org/tunes/8439

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_31596.log 393081 Log file, useful mostly for debugging
Tune-31596-8439.abc 176 ABC music file with the extracted tune(s)
Tune-31596-8439.ps 33760 PostScript
Tune-31596-8439.txt 176 Plain-text file with the extracted tune(s)
Tune-31596-get.log 4039 Log file, useful mostly for debugging
These files should be available for 24 hours.