Error creating entity using custom URL

Hello,

I am creating an entity by a custom URL, when the entity is loading the following error message appears.

Then when I click "yes", the debug page appears with with the following error "Type.registerNamespace('Mscrm')".

If I refresh the page the error dissapears. After the refresh I copy the URL and paste it in a new tab and the error appears again.

I am using the IE 10 and the Dynamics CRM 2011 have the rollup 13 update. Anyone knows why this happening.

Thanks,

Tiago Xavier