pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2883-20491_Johnny_Cope.ps) >>/Users/jc/w/tmp/Tune-2883-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20491_Johnny_Cope.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-2883-20491_Johnny_Cope.abc 1347 ABC music file with the extracted tune(s)
Tune-2883-20491_Johnny_Cope.ps 47342 PostScript
Tune-2883-20491_Johnny_Cope.txt 1347 Plain-text file with the extracted tune(s)
Tune-2883-get.log 13519 Log file, useful mostly for debugging
Tune-28831-get.log 3738 Log file, useful mostly for debugging
Tune-28836-get.log 12058 Log file, useful mostly for debugging
Tune-28839-get.log 9424 Log file, useful mostly for debugging
These files should be available for 24 hours.