pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-79080-1102_the_Bobers_o_Brechin.ps) >>/Users/jc/w/tmp/Tune-79080-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR12/1102_the_Bobers_o_Brechin.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_79080.log 1434481 Log file, useful mostly for debugging
Tune-79080-1102_the_Bobers_o_Brechin.abc 1056 ABC music file with the extracted tune(s)
Tune-79080-1102_the_Bobers_o_Brechin.ps 38823 PostScript
Tune-79080-1102_the_Bobers_o_Brechin.txt 1056 Plain-text file with the extracted tune(s)
Tune-79080-get.log 4858 Log file, useful mostly for debugging
These files should be available for 24 hours.