To test an application on a server, I am running with:

<configuration>
    <system.web>
        <customErrors mode="Off"/>
    </system.web>
</configuration>

What I don't understand, is even with that flag set to off, I am still getting the generic error message when in remote. I can only see the error full details when I am at the server console. I did this before but can't remember what else has to be set in order to have the full details in remote.