In medium bowl combine flour and salt mix well. Add beef and coat well.
Coat a nonstick skillet with cooking spray and heat over medium heat. Add beef and cook until browned.
In a slow cooker layer potatoes, beef and onion. Stir tomatoes with juice, water and any remaining flour mixture together. Pour over top. Cover and cook on low setting for 7 to 8 hours or until beef is tender. Add corn, cover and cook an additional 25 minutes.