LINQ-to-SQL DataContext is null on certain server
<p>I have a very unusual problem. I have an ASP.NET application that uses LINQ-to-SQL a lot, and works fine on most servers. However the application exists on another server on the same network, and after a recent update, whenever I open a new DataContext like this:</p>

<pre><code>LINQDataContext dc = new LINQDataContext();
</code></pre>

<p>The dc object is null, so I get object reference errors trying to use it. I cannot replicate this on my development machine, or on the other server which the application exists on, so I'm baffled about why this could be. Any ideas?</p>
