post indexer plugin support

i installed post indexer plugin to for trial. Acuatlly i installed this plugin for in support requirement of live stream plugin.

but i noticed that after installing and activating post indexer plugin few of my admin function is facing problem. Like i notice that i can not recreate page.. i can not edit page.. i can not delete page... i can not edit or delete any post... etc..

when i try to do any of the above said activity it gives me below error...

Server error
The website encountered an error while retrieving http://mydomain.cooom/wp-admin/post-new.php?post_type=page. It may be down for maintenance or configured incorrectly.

and if i deactivate the plugin every thing start working fine.

please help on the related plugin...