IIS Error Page instead of Custom Error Page

Giganews Newsgroups
Subject: IIS Error Page instead of Custom Error Page
Posted by:  BMeyer (bmeyer@community.nospam)
Date: Thu, 30 Nov 2006

I apologize - posted this in microsoft.public.internetexplorer.general but
don't know if it's a managed newsgroup.  So am reposting here.

Users on same domain with same version of IE (IE 6.0 SP2) are seeing
different behavior with error pages in ASPX application.

When a handled error occurs, some users get the "custom" error page that the
application should display, while other users get

Server Error in '/BDS' Application.

Runtime Error
Description: An application error occurred on the server. The current custom
error settings for this application prevent the details of the application
error from being viewed remotely (for security reasons). It could, however,
be viewed by browsers running on the local server machine.

What could be causing this? It seems it must be on the browser end...