pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-98379-CR4-abc2.abc -F fmt/pdf_55.fmt +s 0.55 +maxs 2000 )>/Users/jc/w/tmp/Tune-98379-CR4-abc2.ps 2>>/Users/jc/w/tmp/Tune-98379-get.log" returned status 35584.
http://john-chambers.us/~jc/music/book/Gow/CR4-abc2.abc

Error exit status 35584; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Tune-98379-CR4-abc2.abc 94295 ABC music file with the extracted tune(s)
Tune-98379-CR4-abc2.ps 38726 PostScript
Tune-98379-CR4-abc2.txt 94295 Plain-text file with the extracted tune(s)
Tune-98379-get.log 52442 Log file, useful mostly for debugging
These files should be available for 24 hours.