Selenium turning off on redirection problem

Question

I have a problem with my selenium script. Basicly what is it supposed to do is click an element that redirects you to a completly different page (url and everything), then login on that page, and then click a button that redirects you back. Whenever i click the first button though, the script turns off, as if the selenium thought the original page was turned off so the script should be turned off too. What do I do to stop that? Thanks