Debugging Bing Maps JavaScript errors

I'm using the Bing Maps / Virtual Earth control and it appears to be working, however Firebug in Firefox 3.6 and Chrome are reporting an uncaught exception in Microsoft's mapcontrol.ashx file. I'm concerned that this may be caused by a bug in my code interacting with Bing Maps.

As this JavaScript file is minified 开发者_C百科I can find no way of debugging it. Is there an un-minified version available or another option for finding what the problem is?

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There is no uncompressed version of the control's script. The only options are standard JavaScript debugging techniques.

Reference: MSDN forums.