pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24392-1051_the_Flaggon.ps) >>/Users/jc/w/tmp/Tune-24392-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/1051_the_Flaggon.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_24392.log 1295431 Log file, useful mostly for debugging
Tune-24392-1051_the_Flaggon.abc 1324 ABC music file with the extracted tune(s)
Tune-24392-1051_the_Flaggon.ps 45525 PostScript
Tune-24392-1051_the_Flaggon.txt 1324 Plain-text file with the extracted tune(s)
Tune-24392-get.log 4710 Log file, useful mostly for debugging
These files should be available for 24 hours.