InfoPath Form Error : Reference to undeclared entity 'nbsp'

I was getting the following error message logged in the event viewer when users were trying to submit a browser enabled InfoPath Form via email;

Exception Message: Reference to undeclared entity 'nbsp'

I found the solution here;

http://support.microsoft.com/kb/931426/en-us

technorati tags:InfoPath, Forms, 2007, kb931426

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