pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5931-169.ps) >>/Users/jc/w/tmp/Tune-5931-get.log 2>&1" returned status 256
http://thesession.org/tunes/169

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Form_59316.log 832 Log file, useful mostly for debugging
Form_59318.log 828 Log file, useful mostly for debugging
Tune-5931-169.abc 394 ABC music file with the extracted tune(s)
Tune-5931-169.ps 37081 PostScript
Tune-5931-169.txt 394 Plain-text file with the extracted tune(s)
Tune-5931-get.log 7342 Log file, useful mostly for debugging
Tune-59312-get.log 16424 Log file, useful mostly for debugging
These files should be available for 24 hours.