We have been using the Web Browser control on a form to view PDF files for a couple of years now. One of our clients is suddenly getting script errors when trying to view PDFs. They say the only difference is that they just applied all M$ critical updates. We have verified that the script debugger options are disabled in their Internet Explorer. The actual error is -

A Runtime Error has occurred.
Do you wish to Debug?

Line:1
Error: Invalid character

Selecting either Yes or No from the dialog box brings up another dialog and the PDF is not displayed. The PDFs view just fine inside of IE. Also, if we copy the PDF from the network drive to the local hard drive then it loads with no errors. Any help would be appreciated.

-Dan