just tried to install it again...here's what the process says
Installing Plugin: Jetpack by WordPress.com 3.0.2
Downloading install package from https://downloads.wordpress.org/plugin/jetpack.3.0.2.zip…
Unpacking the package…
Installing the plugin…
Destination folder already exists. /home/content/76/9866776/html/wp-content/plugins/jetpack/
Plugin install failed.
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