I added a customization archive in Mas, and now MAS is failing to restart. How can I remove this configuration so I can get Maximo to startup?

Heres' the error log:Archive: customization.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 customization.zip or
customization.zip.zip, and cannot find customization.zip.ZIP, period.