Philis's dashboard

My webshots background will not stay active. When my PC loads the background goes to the default white and has the error message to click "restore my desktop ." The only way to restore webshots desktop is to go to background click off webshots...click on another background...click back on webshots...click "OK". And the webshots background will appear....but....then it goes off again and back to white background and "restore desktop". Can anybody please help?