An invalid key ({0}) was detected in the TemplateCollection Hashtable array. The following keys are valid: Culture: The culture ...

An invalid key ({0}) was detected in the TemplateCollection Hashtable array. The following keys are valid: 

Culture: The culture to which the e-mail template will be sent. The value corresponding to this key should be a System.Globalization.CultureInfo object or the integer LCID of such an object. This key/value pair is required.

Body: The body of the e-mail message to be sent, a string.

Subject: The subject of the e-mail message to be sent, a string.
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