<p></p>
<p>Unfortunately there's very little I can do to help with this because while I can debug the initial login step I have no way of actually logging in and debugging the return to the site.</p>
<p>Nothing has changed at our end anyway, so if it was working the other day then it ought to be working now.</p>
<p>What that message is basically saying is that the callback to our site reported an error with the login but it didn't give a valid error code.</p>
<p>You don't say which cookie that message is talking about but I'm guessing it is <code>_osm_location</code> which is not important and certainly has nothing to do with logging in.</p>

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