pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54220-1911.ps) >>/Users/jc/w/tmp/Tune-54220-get.log 2>&1" returned status 256
http://thesession.org/tunes/1911

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_54220.log 760 Log file, useful mostly for debugging
Tune-54220-1911.abc 273 ABC music file with the extracted tune(s)
Tune-54220-1911.ps 35529 PostScript
Tune-54220-1911.txt 273 Plain-text file with the extracted tune(s)
Tune-54220-get.log 9879 Log file, useful mostly for debugging
These files should be available for 24 hours.