pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-43052-379_Change_Alley.ps) >>/Users/jc/w/tmp/Tune-43052-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1800/Preston/379_Change_Alley.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-43052-379_Change_Alley.abc 764 ABC music file with the extracted tune(s)
Tune-43052-379_Change_Alley.ps 33209 PostScript
Tune-43052-379_Change_Alley.txt 764 Plain-text file with the extracted tune(s)
Tune-43052-get.log 9193 Log file, useful mostly for debugging
These files should be available for 24 hours.