Can't Set DateTime Package Variable With MS Access Date

Hello,
I have a package variable called LatestTableFileDate that is typed to DateTime. I have an Execute SQL Task that executes the following SQL statement against an MS Access 2000 database table through the OLEDB Jet provider;

SELECT MAX(FileDate) AS MaxFileDate
FROM CollectionData_Access

The statement parses fine. At the moment, the returned value is NULL. I have 'Result Set' set to 'Single Row'. The FileDate column in the Access table is 'Date/Time', and the Format is 'Short Date'.

In the result set properties, I attempt to set the result to the LatestTableFileDate user variable. When I run the task, the task fails, and the following appears on the 'Progress' tab;

[Execute SQL Task] Error: An error occurred while assigning a value to variable "LatestTableFileDate": "Unsupported data type on result set binding 0.".

I searched the forum for this problem, and didn't find anything. Do I need to convert the date in MS Access to a string and set the package variable to a string type, or is there some other way to handle this?

Thank you for your help!

cdun2