Click-once application crashes after Form Load - visual-studio-2010

Question

I saw this problem in several places on the internet, without any clear solution. I do need support to know how to detect the root cause and fix this problem for ever.
A ClickOnce application published and works on almost all computers, crashes after loading the startup form without any errors.
Crashes means -
'Verifying application requirements' dialog box checks latest updates perfectly. In case there is, it downloads automatically.
Startup form opens for maximum 1 second, then closes automatically. [frequently] OR
Startup form opens, user types a letter (or clicks the mouse), then app closes automatically. [rarely]
No error message is thrown.
This phenomenon happens only on a limited number of computers, under specific user profiles. This means that on the same computer, the app launches without problem for user 'A', while for another user it crashes.
Already tried the following, without any solution -
Uninstall/reinstall the app - in most of the cases it works, but not always. Furthermore, it sometimes crashes when publishing new updates, on computers where the app was previously working.
Certificates - publishing the app with or without certificate does not make any difference.
Delete/Create user profile - did not solve the problem.
Manually delete the user profile folder from Documents And Settings/[user]/...
No Kensington mouse driver is avaliable on the computers.
Try/Catch blocks in Program.cs or in Startup form InitializeComponents()
Any idea where the problem is coming from, and how it can be detected?
Here is the code for Program.cs
namespace NCR_MaterialToolbox
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.SetUnhandledExceptionMode(UnhandledExceptionMode.ThrowException);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new frmLogin());
}
}
}
Here is the code for frmLogin
public frmLogin()
{
InitializeComponent();
}