I am using FBII. I have one main file of size 8k. It uses/declares one global file of size 8k, and six include files which uses the globals file and these six include files come to a total of 340k. For some reason after my code gets to this total size of 356k (which is not big at all) my buttons and check boxes seem not to respond on the first click and not even the second or third click at times. In my main file I use on dialog, on event, on mouse, on break and handlevents. When there is less code in the the total program the buttons and check boxes work fine. Would anyone have any advice on what my problem might be? Thanks, Doug