pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-49894-Barbadoes.ps) >>/Users/jc/w/tmp/Tune-49894-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnWalsh/Barbadoes.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_49894.log 443010 Log file, useful mostly for debugging
Form_49894.log 1047 Log file, useful mostly for debugging
Tune-49894-Barbadoes.abc 1107 ABC music file with the extracted tune(s)
Tune-49894-Barbadoes.ps 35163 PostScript
Tune-49894-Barbadoes.txt 1107 Plain-text file with the extracted tune(s)
Tune-49894-get.log 4365 Log file, useful mostly for debugging
These files should be available for 24 hours.