pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-28262-pgh_session_tunebook.ps) >>/Users/jc/w/tmp/Tune-28262-get.log 2>&1" returned status 256
http://www.gulfweb.net/rlwalker/abc/pgh_session_tunebook.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
Tune-28262-get.log 4539 Log file, useful mostly for debugging
Tune-28262-pgh_session_tunebook.abc 415 ABC music file with the extracted tune(s)
Tune-28262-pgh_session_tunebook.ps 35865 PostScript
Tune-28262-pgh_session_tunebook.txt 415 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.