pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-29469-053_Jock_O_Hazeldean.abc -F fmt/pdf_55.fmt +s 0.55 +maxs 2000 )>/Users/jc/w/tmp/Tune-29469-053_Jock_O_Hazeldean.ps 2>>/Users/jc/w/tmp/Tune-29469-get.log" returned status 34304.
http://john-chambers.us/~jc/music/book/Chappell/053_Jock_O_Hazeldean.abc

Error exit status 34304; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Tune-29469-053_Jock_O_Hazeldean.abc 568 ABC music file with the extracted tune(s)
Tune-29469-053_Jock_O_Hazeldean.ps 30546 PostScript
Tune-29469-053_Jock_O_Hazeldean.txt 568 Plain-text file with the extracted tune(s)
Tune-29469-get.log 6842 Log file, useful mostly for debugging
These files should be available for 24 hours.