pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-74290-2144_the_Braes_of_Marr.ps) >>/Users/jc/w/tmp/Tune-74290-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2144_the_Braes_of_Marr.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-74290-2144_the_Braes_of_Marr.abc 384 ABC music file with the extracted tune(s)
Tune-74290-2144_the_Braes_of_Marr.ps 33322 PostScript
Tune-74290-2144_the_Braes_of_Marr.txt 384 Plain-text file with the extracted tune(s)
Tune-74290-get.log 8740 Log file, useful mostly for debugging
These files should be available for 24 hours.