Travel Booking plugin installation failed

I have installed the Tour & Travel WordPress Theme. After installation it asks to install and activate the required plugins. All plugins got activated instead “Travel Booking”. Everytime it throws this error whenever I am trying to install this plugin.

Downloading installation package from http://physcode.com/plugins/travel-booking.zip…

Unpacking the package…

Installing the plugin…

The remote plugin package consists of more than one file, but the files are not packaged in a folder. Please contact the plugin provider and ask them to package their plugin according to the WordPress guidelines.

Plugin installation failed.

Please help.