pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-29510-20061_Bright_Rosy_Morning.ps) >>/Users/jc/w/tmp/Tune-29510-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20061_Bright_Rosy_Morning.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-29510-20061_Bright_Rosy_Morning.abc 601 ABC music file with the extracted tune(s)
Tune-29510-20061_Bright_Rosy_Morning.ps 33074 PostScript
Tune-29510-20061_Bright_Rosy_Morning.txt 601 Plain-text file with the extracted tune(s)
Tune-29510-get.log 5030 Log file, useful mostly for debugging
These files should be available for 24 hours.