A strange change has occurred to my application and I cannot figure out what the change is. I used to be able to place the cursor in a control, select the text and then type over it in order to change the value of a control. For example, if a control was 0 and I wanted 2000, I highlight the 0 and type 2000. Now when I try to do that, the cursor just flashes and a check mark to the left of the run arrow in the upper left of the screen flashes. No highlighting is possible. This occurs when the program is running.