Read pdf from sharepoint 2010 via .net click once application

Hi,

I have run into an issue and was hoping you could help me resolve it.

I have SharePoint 2010 as our environment and currently have a few pdf's located in a list. We have a .net ClickOnce application that is suppose to read the pdf, add some data, download it in another directory and then display it in the adobe reader.

As it is clickonce, impersonation is used. The application account has read access to the list. All the users who use the application also have read access.

I am using the path that SharePoint created as the folder path for these documents. However, when I try to read the document via the path it throws this error: System.IO.IOException: \\sharepoint\sites\ab\Forms List\test - 1.pdf not found as file or resource.

Thanks,

Moneka