InfoPath Dev

I am having this problem every time that I try to access the VSTA or through VS; after seeing the new project for the form in question, the designer is unable to render a preview and I get the follwoing message:

"Form template: file:///C:\Users\Samir\Documents\formv2.xsn
InfoPath cannot open the selected form because of an error in the form's code.
Policy settings prevent opening Internet forms with managed code. To fix this problem, contact your system administrator".

Any ideas how to overcome this?

 Thanks

Hi,

May be there are errors in the code like there is a on click event for button which is not specified in the form. Check the code once.

I do not think so because this happens even without me writing any code, or making any change, in a form that was opening correctly before.

Thanks