Having a very strange issue running an EPiServer site.  It all runs as expected when I don't have a License.config file in place (though of course with the "no license" message).

When I add the License.config file, this message goes away.  But I can see interspersed seemingly randomly in the HTML there are long strings of null characters (%EF%BF%BD).  This places odd characters on the page, and if in a URL e.g. for a JavaScript reference, breaks the URL (you get a "Request Too Long" error.

One other fact is that this only seems to occur when debug="false" in web.config.

As I say, very strange, but any advice much appreciated.

Andy