Error exit status 256; here are some files to check:

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filesizedescription
Form_79918.log 875 Log file, useful mostly for debugging
Tune-79918-get.log 31773 Log file, useful mostly for debugging
Tune-79918-job_ABC.abc 0 ABC music file with the extracted tune(s)
Tune-79918-job_ABC.txt 0 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.