Does anyone know of a fix for Windows Explorer (XP version 5.1, Build 2600, SP2) bug that closes Explorer when selecting an .mpg file? The message is "This program (Windows Explorer) had to be closed due to security reasons"....
Thanks in advance
Rainer  

   I also have the same problem, but I don't remember always having it.  Have you tried searching for that error message on http://search.microsoft.com?  If you find a solution, please post back on this list with the answer.  Thank you.

This article in the knowledge base seems to apply to your problem.
http://support.microsoft.com/?scid=kb;en-us;878461&spid=1173&sid=global

The article deals with HTML files, but the security feature in it seems the same as the one blocking your mpg files.

   I tried the knowledge base article that dlwolff0 suggested and it did not work for me.  But while I was there I did a search for Data Execution Prevention (which is new feature, "bug", which is causing my problems) and found the following article - http://support.microsoft.com/kb/875352
   Data Execution Prevention is new in SP2 and is set up in the boot.ini file after the command, /noexecute=

Same with me. Changing the Registry (like described in dlwolff0's entry) did not help. I guess I'll change them back to the original values.

Changing the boot.ini entry (like described in Ray's entry) from "/NoExecute=OptIn" to "/NoExecute=AlwaysOff" did help.

Thank you, very helpful forum
rainer