Clan creation not working !

Hi,

I updated my site and after that I enabled users to create clan.

I am now getting a 404 error when any user tries to create a new clan.

I have noticed the permalink change when I click on create clan –

My permalinks structure is this – http://beta.r4idforce.com/sample-post/

Clan creation redirects to this link – http://beta.r4idforce.com/?p=3579
Which then shows a 404 error.