pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-53249-2091.ps) >>/Users/jc/w/tmp/Tune-53249-get.log 2>&1" returned status 256
http://thesession.org/tunes/2091

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-53249-2091.abc 342 ABC music file with the extracted tune(s)
Tune-53249-2091.ps 37168 PostScript
Tune-53249-2091.txt 342 Plain-text file with the extracted tune(s)
Tune-53249-get.log 3913 Log file, useful mostly for debugging
These files should be available for 24 hours.