It always loading ???
Why ? <img src="smileys/smiley19.gif" border="0" align="middle" />
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Try checking your error console.
Zenox is right. I've moved your topic
Try to check for errors in your browser.
Apparently there's an issue with the web worker for the pathfinding of your game. Make sure your host isn't cause of that.
Try to post your exported version on another host (like dropbox) to see if the issue is only with the current host or might require a more serious bug report.
What C2 version are you using? I think that error message is a bug that was fixed months ago.