pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6761-2413.ps) >>/Users/jc/w/tmp/Tune-6761-get.log 2>&1" returned status 256
http://thesession.org/tunes/2413

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_67611.log 261969 Log file, useful mostly for debugging
Coll_67612.log 141597 Log file, useful mostly for debugging
Coll_67617.log 121679 Log file, useful mostly for debugging
Form_6761.log 807 Log file, useful mostly for debugging
Form_67617.log 860 Log file, useful mostly for debugging
Tune-6761-2413.abc 216 ABC music file with the extracted tune(s)
Tune-6761-2413.ps 35292 PostScript
Tune-6761-2413.txt 216 Plain-text file with the extracted tune(s)
Tune-6761-get.log 3959 Log file, useful mostly for debugging
Tune-67610-get.log 3322 Log file, useful mostly for debugging
These files should be available for 24 hours.