Altium has very bad printing interface. I had the software crashing because I dared to click the print preview button, and my printer current printer wasnt a standard printer but a laber printer. It defaulted to that, and then crashed. Nice.
Anyways, check the print preview button. Right click, and go to "configuration". That is the first step, and restarting the software, closing all the other open project, freeing up memory. It shouldnt be this way, but it is.