x10hosting WON'T extract my .ZIP

[tanner.keleher448]

X10hosting won't extract my .zip, I have uploaded it numerous times, and still nothing.
This is the error I get!

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Archive: /home/quack123/public_html/upload.zip End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. unzip: cannot find zipfile directory in one of /home/quack123/public_html/upload.zip or /home/quack123/public_html/upload.zip.zip, and cannot find /home/quack123/public_html/upload.zip.ZIP, period.

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[leafypiggy]

You uploaded a .zip.zip...

Try just a .zip...