Opening a table pattern in excel with excel open

First, the parameter part_table_editor is set to "excel"

That said, Creo will not allow me to open and edit a table pattern in excel if I already have another excel window open.

When attempting to do that it throws this error: 

The fix I have found (which is incredibly inefficient) is to close all open excel windows, open the table pattern, then reopen the excel files I am using to generate the data needed for the table pattern.

Does anyone know if there is a fix that will allow me to open table patterns in excel without closing all other excel windows?