500 Internal server error in kunena - php

I am using Joomla 1.5.2 and the Kunena Forum Component,
When I click on the Kunena forum in the back end I get a 500 Internal server error. The full error is as shown below.
Fatal Error: require_once() [function.require]:
Failed opening required '/home/example/public_html/administrator/components/com_kunena/install/version.php'
(include_path='.:/usr/lib/php:/usr/local/lib/php') in components/com_kunena/admin.kunena.php on line 46
The error was detected in the Kunena Component.
Could anyone help me to resolve?

This is happened because of not proper installing. You may uninstall the component and install it again,. It may solves your problem.

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