Hi, type about:config into the address bar, press Enter, accept the warning, scroll down to browser.newtab.url and make sure 'Value' is set to about:newtab (right click to change it).

Hope that works.

pacman46 said

When I click on new tab a page used to appear with the most popular pages I visit, It doesnt do this now I only get the screen like the image attached. How can i get it back to how it used to be? Thanks in aadvance for any help.

thanks for your quick reply. Sorted straight away.