Sending Payslip as PDF

Dear all,

I developed the Report program which will send payslip as PDF attachement to all employees.i am able to receive the mail along with Payslip as PDF Format.

but i am unable to open the PDF format.its showing error message as

"Adobe reader could not open the PDF file because it is either not a supported file or because the file has been damaged (for example it was sent as an email attachment and was not correctly decoded"

Can any one help regarding this issue

Thanks in advance.

Sudheer