pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-39121-3011-the_Highland_Chieftain.ps) >>/Users/jc/w/tmp/Tune-39121-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/3011-the_Highland_Chieftain.abc1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_39121.log 443010 Log file, useful mostly for debugging
Tune-39121-3011-the_Highland_Chieftain.abc 1155 ABC music file with the extracted tune(s)
Tune-39121-3011-the_Highland_Chieftain.ps 42753 PostScript
Tune-39121-3011-the_Highland_Chieftain.txt 1155 Plain-text file with the extracted tune(s)
Tune-39121-get.log 5008 Log file, useful mostly for debugging
These files should be available for 24 hours.