pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-14141-1641_LA_POLKA.abc -F fmt/pdf_70.fmt +s 0.70 +maxs 2000 )>/Users/jc/w/tmp/Tune-14141-1641_LA_POLKA.ps 2>>/Users/jc/w/tmp/Tune-14141-get.log" returned status 34304.
http://john-chambers.us/~jc/music/book/BostonCollection/1641_LA_POLKA.abc

Error exit status 34304; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-14141-1641_LA_POLKA.abc 3626 ABC music file with the extracted tune(s)
Tune-14141-1641_LA_POLKA.ps 0 PostScript
Tune-14141-1641_LA_POLKA.txt 3626 Plain-text file with the extracted tune(s)
Tune-14141-get.log 6160 Log file, useful mostly for debugging
These files should be available for 24 hours.