pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-92922-24CountryDances_1793_Preston.ps) >>/Users/jc/w/tmp/Tune-92922-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/24CountryDances_1793_Preston.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_92922.log 135066 Log file, useful mostly for debugging
Tune-92922-24CountryDances_1793_Preston.abc 21697 ABC music file with the extracted tune(s)
Tune-92922-24CountryDances_1793_Preston.ps 135051 PostScript
Tune-92922-24CountryDances_1793_Preston.txt 21697 Plain-text file with the extracted tune(s)
Tune-92922-get.log 18408 Log file, useful mostly for debugging
These files should be available for 24 hours.