pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-19747-Dusty_Miller_G.ps) >>/Users/jc/w/tmp/Tune-19747-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/song/Dusty_Miller_G.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-19747-Dusty_Miller_G.abc 736 ABC music file with the extracted tune(s)
Tune-19747-Dusty_Miller_G.ps 34374 PostScript
Tune-19747-Dusty_Miller_G.txt 736 Plain-text file with the extracted tune(s)
Tune-19747-get.log 10435 Log file, useful mostly for debugging
These files should be available for 24 hours.