Modules & VBA :: Generating Text Fields From Query

I've come across a problem that doesn't make sense to me. I have a form with a combo box on it. Each time the combo box is used or the form is moved to another record it triggers an event to update the text boxes.

I get the information for the text boxes from a query. Everything was working smoothly until I decided to add a text box to the form to be filled in. My thought was I add the column from the query to the code and it will update. No dice. It doesn't recognize any information in the query. But when I run the query as a standalone it sees the text. When i open the table that holds the text, it is still there.

Code:

Private Sub cboDoctor_AfterUpdate()
'update doctor fields on the update of the combo box
If Len(Me.cboDoctor) > 0 Then
Call DoctorName_Change

[code]...

When i step through the code it shows values for each of the columns except for column 11. It reports as 'null.' Things I've tried:

-Updating the combo box by reselecting the value for the record.
-Restarting DB.
-Changing from one record in the combo box back to the original record.

Is there a limit of columns that can be used? Column 10 works just fine...