pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57571-2068_Ca_the_Stirks.ps) >>/Users/jc/w/tmp/Tune-57571-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2068_Ca_the_Stirks.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-57571-2068_Ca_the_Stirks.abc 461 ABC music file with the extracted tune(s)
Tune-57571-2068_Ca_the_Stirks.ps 34939 PostScript
Tune-57571-2068_Ca_the_Stirks.txt 461 Plain-text file with the extracted tune(s)
Tune-57571-Round_Band_Book_of_Playford.abc 164 ABC music file with the extracted tune(s)
Tune-57571-Round_Band_Book_of_Playford.ps 6 PostScript
Tune-57571-Round_Band_Book_of_Playford.txt 164 Plain-text file with the extracted tune(s)
Tune-57571-get.log 9149 Log file, useful mostly for debugging
These files should be available for 24 hours.