pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4692-newpage.ps) >>/Users/jc/w/tmp/Tune-4692-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP1/newpage.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_46927.log 240011 Log file, useful mostly for debugging
Tune-4692-get.log 3999 Log file, useful mostly for debugging
Tune-4692-newpage.abc 33 ABC music file with the extracted tune(s)
Tune-4692-newpage.ps 6 PostScript
Tune-4692-newpage.txt 33 Plain-text file with the extracted tune(s)
Tune-46920-get.log 4539 Log file, useful mostly for debugging
Tune-46921-get.log 4513 Log file, useful mostly for debugging
Tune-46922-get.log 4038 Log file, useful mostly for debugging
Tune-46923-get.log 16922 Log file, useful mostly for debugging
Tune-46924-get.log 4721 Log file, useful mostly for debugging
Tune-46927-get.log 4495 Log file, useful mostly for debugging
Tune-46928-get.log 10231 Log file, useful mostly for debugging
Tune-46929-get.log 3642 Log file, useful mostly for debugging
These files should be available for 24 hours.