pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-94765-Muckin_o_Geordies_Byre_1.ps) >>/Users/jc/w/tmp/Tune-94765-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/mu/Muckin_o_Geordies_Byre_1.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-94765-Muckin_o_Geordies_Byre_1.abc 393 ABC music file with the extracted tune(s)
Tune-94765-Muckin_o_Geordies_Byre_1.ps 34792 PostScript
Tune-94765-Muckin_o_Geordies_Byre_1.txt 393 Plain-text file with the extracted tune(s)
Tune-94765-get.log 5247 Log file, useful mostly for debugging
These files should be available for 24 hours.