Portfolio Plugin Download Error in Perth

I’m receiving the below error message when trying to upload the portfolio plugin in the plugin screen.

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

Hello there,

Please unzip the plugin package, then upload it with your FTP program. Read the codex for more detailed instructions.

Regards,
Kharis