I went to import some new photos from my laptop into Lightroom and it gets as far as selecting the photos I want to import but when I go to click on import nothing happens. It won't even allow me to select cancel, I have to quit the entire program. Any advice would be greatly appreciated. I have just updated it to see if that would help but sadly not.
Mac or Windows? What version?
Which exact NUMBER version of Lightroom?
Using a card reader or directly connecting the camera?
Lightroom CC 2015.7 
I'm not connecting the camera to Lightroom, I upload the photos to a file on my laptop and then import them from there which is what I've always done but it has suddenly stopped working
If you are doing an "add" import, that is very strange.
If you are doing a "copy" import, take look at the Destination panel to see it is pointing where you want, and using File Explorer make sure you have READ and WRITE access to the destination folder and its parent.