pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-81187-5643.ps) >>/Users/jc/w/tmp/Tune-81187-get.log 2>&1" returned status 256
http://thesession.org/tunes/5643

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_81187.log 840 Log file, useful mostly for debugging
Tune-81187-5643.abc 364 ABC music file with the extracted tune(s)
Tune-81187-5643.ps 38260 PostScript
Tune-81187-5643.txt 364 Plain-text file with the extracted tune(s)
Tune-81187-get.log 4054 Log file, useful mostly for debugging
These files should be available for 24 hours.