Problem Debugging Internet Explorer 8

A couple of days ago, I downloaded some files using Internet Explorer 8,
and the procedure seems to have fouled up the operation of my browser. I
get a Dialog Box that shows the following message:

Microsoft Visual C++ Debug Library

Debug Error!

Program:C:\programfiles\internetexplore\iexplore.e xe

abnormal program termination

press Retry to debug the application.

When I press Retry in order to debug the application, the browser window
closes and does not debug the program.

I get the following message: "Your last browsing session closed
unexpectedly. Would you like to restore your last session or go to your
home page?

How do I debug this program? Any help will be appreciated.