Cannot access network path via application

I have a workstation and a server. They are both windows 7 machines.

I can browse to the files via windows explorer from the workstation.

I have an application on the workstation that need to access files on the server, however it keeps on telling me that the \\server\Folder\File1.ini does not exist.

When I try to access an .exe file on the server, from the workstation via my application, it says, the \\server\Folder\app.exe does not exist.

We have tried doing this http://support.microsoft.com/kb/156276 but to no avail.