How can I get useful WPF .NET error information from a user's machine?

Question

I have a WPF application that\'s crashing once I get it onto machines that do not have a development environment installed-- if this is a dupe, I\'m welcome to closing, but

Answer 1

Exception logging (as in the answer from Alastair Pitts) would be a help in zeroing in on the source of the error.

The presence of XamlParse on line P9 suggests that there may be a problem initializing a control or window from the XAML description. There may be an assembly referenced by the XAML which was not found on the target computer, or did not match the signature in the XAML.

Edit:

XAML parsing occurs in InitializeComponent() which is called in the constructor of the window or control