I created a ExportG3R table with text fields for Extension and name . Your query worked with name values like "Litzner, Mike". However, a name value which doesn't include a comma, such as "Litzner Mike", gave me #Error for LastName and "Litzner Mike" for FirstName.
And if name is Null, it gives me #Error for both. Neither of those was a deal-breaker for SELECT until I tried to sort on LastName and/or FirstName. When attempting those sorts, the Access 2003 db engine responded "Invalid procedure call", which is not the same error message you're getting.
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