Open PDF from Thinapp IE with native Reader

Hi Everybody

I've made a IE thinapp for an ActiveX Application whose not compatible with Windows 7. The Application is working fine. The Problem is on the website of this application you can view specific information only in a PDF file. But i can't open the file from the thinapped IE. Native installed Adobe Reader show up a message that Adobe don't find the specified file. The temporary Internet Folder ist merged with Computer. File is saved on the local Computer Temporary Internet Files.

Is there a way i can get this work?

Regards