PCLZIP_ERR_BAD_FORMAT (-10) :

jiyueone

Downloading installation package from http://api.muffingroup.com/plugins/download.php?code=23c8a45e-b692-4a2a-a80e-2852e1fefdf7&plugin=LayerSlider…

Unpacking the package…

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature

Bryan

Please first try to disable all plugins and then run the update.
If this does not help then contact your hosting provider to check if the CURL library is active for the current version of PHP.
thanks

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