pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-51553-CR3-abc2.abc -F fmt/pdf_55.fmt +s 0.55 +maxs 2000 )>/Users/jc/w/tmp/Tune-51553-CR3-abc2.ps 2>>/Users/jc/w/tmp/Tune-51553-get.log" returned status 34304.
http://john-chambers.us/~jc/music/book/Gow/CR/CR3-abc2.abc

Error exit status 34304; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Tune-51553-CR3-abc2.abc 94749 ABC music file with the extracted tune(s)
Tune-51553-CR3-abc2.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-51553-CR3-abc2.ps 425408 PostScript
Tune-51553-CR3-abc2.txt 94749 Plain-text file with the extracted tune(s)
Tune-51553-get.log 73102 Log file, useful mostly for debugging
These files should be available for 24 hours.