Error Downloading and Installing SMUSHIT.

Installing Plugin: WP Smush Pro 2.0.6.1
Downloading install package from https://premium.wpmudev.org/wdp-un.php?action=install&key=a785f2fb0c37c92d1df431f2f35e6e18b6737408&pid=912164…

Unpacking the package…

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