My CorelDRAW X5 can't connect to Corel Photo Paint X5

I can't open my Corel Photo Paint X5 from CorelDRAW X5, when i edit a bitmap image, it opens Corel Photo Paint X4. So, i remove my Corel Suite X4 from my computer. But it turns worse, my CorelDRAW can't show the edit button. Please help me how to recover it.