pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6309-20112_Thayers_March.ps) >>/Users/jc/w/tmp/Tune-6309-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20112_Thayers_March.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-6309-20112_Thayers_March.abc 712 ABC music file with the extracted tune(s)
Tune-6309-20112_Thayers_March.ps 37166 PostScript
Tune-6309-20112_Thayers_March.txt 712 Plain-text file with the extracted tune(s)
Tune-6309-get.log 10273 Log file, useful mostly for debugging
Tune-63091-get.log 9900 Log file, useful mostly for debugging
Tune-63092-get.log 8004 Log file, useful mostly for debugging
Tune-63093-get.log 10994 Log file, useful mostly for debugging
Tune-63094-get.log 4059 Log file, useful mostly for debugging
Tune-63096-get.log 5976 Log file, useful mostly for debugging
These files should be available for 24 hours.