pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8664-sessionite.ps) >>/Users/jc/w/tmp/Tune-8664-get.log 2>&1" returned status 256
http://www.feardearg.com/sessionite/docs/sessionite.abc

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_86641.log 137967 Log file, useful mostly for debugging
Form_86640.log 843 Log file, useful mostly for debugging
Form_86646.log 810 Log file, useful mostly for debugging
Tune-8664-get.log 95796 Log file, useful mostly for debugging
Tune-8664-sessionite.abc 313 ABC music file with the extracted tune(s)
Tune-8664-sessionite.ps 34478 PostScript
Tune-8664-sessionite.txt 313 Plain-text file with the extracted tune(s)
Tune-86648-get.log 3043 Log file, useful mostly for debugging
These files should be available for 24 hours.