midicmd="abc2midi /Users/jc/w/tmp/Tune-7292-Skink2alpha.abc -v -o /Users/jc/w/tmp/Tune-7292-Skink2alpha.midi >>/Users/jc/w/tmp/Tune-7292-get.log 2>&1" returned status 34304.

Error exit status 34304; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 ]
filesizedescription
Coll_7292.log 142202 Log file, useful mostly for debugging
Find_72920.log 1791 Log file, useful mostly for debugging
Form_72920.log 0 Log file, useful mostly for debugging
Tune-7292-Skink2alpha.abc 531 ABC music file with the extracted tune(s)
Tune-7292-Skink2alpha.txt 531 Plain-text file with the extracted tune(s)
Tune-7292-get.log 8456 Log file, useful mostly for debugging
Tune-72921-get.log 1396 Log file, useful mostly for debugging
Tune-72924-get.log 7049 Log file, useful mostly for debugging
Tune-72926-get.log 14893 Log file, useful mostly for debugging
These files should be available for 24 hours.