Queries :: (Enter Parameter Value) Error When Updating SharePoint Table / List

I have a list (table) that I've created in sharepoint 2010.I link to the sharepoint table with Access 2010 to update mass amounts of items at once. Some of the queries have no problem updating the sharepoint items, but other queries require me to "Enter Paramater Value."

In this particular queries; I'm trying to populate field A with dates from field B, when field A is null.

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UPDATE Table 1 SET Table.[FieldA] = [FieldB]
WHERE (((Table 1.[FieldA]) Is Null));
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When I run the above, I receive the "Enter Parameter Value" input box.All records have Field B populated (it's actually the created date.)

The goal is for field A to be populated with the values in Field B, without the query asking for parameters.

Note; I can go in each individual record and update them via access, one at a time. But it's the running of the update query that failing.

Edit: Removed spaces in table and field names.