Update Failed Deactivated

My update from 4.1 to 5.0 failed and I got a notice that the plugin was deactivated. Now the plugin is gone from my plugin’s list.

I attempted to re-download and got this error:

Downloading install package from http://downloads.wordpress.org/plugin/powerpress.5.0.zip…

Unpacking the package…

Installing the plugin…

Destination folder already exists. /hermes/waloraweb042/b572/moo.bnb2013/wp-content/plugins/powerpress/

Plugin install failed.

http://wordpress.org/plugins/powerpress/