What is the "Process" textbox bound to? When you get the error, bring up the immediate window and type
Code:
debug.print Me.Process.value
CHECK STEP ONE - About the time you type the second period, the programming interface should pop up Value as a suggestion for the property that you are looking for. If it does not do that, then there might be something wrong with the textbox itself - make a copy of the database, and in the test copy, delete that control and recreate it from scratch. See if that solves your problem.
CHECK STEP TWO - Hit enter and see what value you get. If you are dealing with a NULL, then you could try code something like
Code:
If Process.Value Is Not NULL then
Process.Value = ""
End if
CHECK STEP THREE - Review the field table to which the Process textbox is bound. Verify that the field in the table is set up to allow zero-length strings. If not, then add one space to the string that you are assigning.