Process.Start don't work in Windows 7

[Per Eriksson]

Hi!
I have made a very simple forms application in VS2010 (C#) that is used by a vast number of people in my office and our offices around the world. It's a little app that lets an engineer handle the logistics of saving and opening documents from one place so to speak.
It's been working fine for a couple of years now until we started to switch to Windows 7 on the personnel computers.
Suddenly the below section of code works only for Excel documents but not for Pdf and Word in which case the system returns a FileNotFound exception:
Code:
fdiag = new OpenFileDialog();
tmpPath = buttonNodeTmp.Attributes.GetNamedItem("path").Valu e;
fdiag.InitialDirectory = Path.Combine(fPath, tmpPath);
fdiag.Title = caption;
if (fdiag.ShowDialog() == DialogResult.OK)
{
System.Diagnostics.Process.Start(System.IO.Path.Ge tFileName(fdiag.FileName));
}
//


I would be forever grateful if somebody could give me a hint on what has changed in Windows 7 such that the above code fails for some types of processes.

Kind Regards
Per Eriksson

[Per Eriksson]

I have sorted the problem out and it seems that it was SBW...;-)