SMartform thorugh Email

Hi Friends,

I have an urgent requirement that to send the smartform through Email , but i had successfully receving the mail into my mail box , the main problem is when iam trying to PDF attachment in SBWP or in my mail iam getting the error like " There was error opening this document. The file is damaged and could not be repaired".

Please can any one suggest or give the solution for opening this document properly , this is very urgent requirement.

Thanks