pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-14255-Muckin_o_Geordies_Byre.ps) >>/Users/jc/w/tmp/Tune-14255-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/NEFR/jig/Muckin_o_Geordies_Byre.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-14255-Muckin_o_Geordies_Byre.abc 525 ABC music file with the extracted tune(s)
Tune-14255-Muckin_o_Geordies_Byre.ps 34471 PostScript
Tune-14255-Muckin_o_Geordies_Byre.txt 525 Plain-text file with the extracted tune(s)
Tune-14255-get.log 5146 Log file, useful mostly for debugging
These files should be available for 24 hours.