pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-8714-tune-422-hunt-squirrel-headington.abc -F fmt/pdf_60.fmt +s 0.60 +maxs 2000 )>/Users/jc/w/tmp/Tune-8714-tune-422-hunt-squirrel-headington.ps 2>>/Users/jc/w/tmp/Tune-8714-get.log" returned status 34304.
http://lesters-tune-a-day.blogspot.fr/2015/07/tune-422-hunt-squirrel-headington.html

Error exit status 34304; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 ]
filesizedescription
Form_87142.log 712 Log file, useful mostly for debugging
Form_87143.log 747 Log file, useful mostly for debugging
Form_87149.log 752 Log file, useful mostly for debugging
Tune-8714-get.log 5957 Log file, useful mostly for debugging
Tune-8714-tune-422-hunt-squirrel-headington.abc 2885 ABC music file with the extracted tune(s)
Tune-8714-tune-422-hunt-squirrel-headington.ps 0 PostScript
Tune-8714-tune-422-hunt-squirrel-headington.txt 2885 Plain-text file with the extracted tune(s)
Tune-87142-2200.abc 303 ABC music file with the extracted tune(s)
Tune-87142-2200.txt 303 Plain-text file with the extracted tune(s)
Tune-87142-get.log 5585 Log file, useful mostly for debugging
Tune-87144-get.log 4996 Log file, useful mostly for debugging
Tune-87145-get.log 2781 Log file, useful mostly for debugging
Tune-87149-get.log 6876 Log file, useful mostly for debugging
These files should be available for 24 hours.