Firefox crashes when selecting files from mac/ any solutions?

Running the latest versions of OSX mavericks.. I have problems with firefox crashing when I go to select a file from my computer, like a pic, or an attachment, or anything.. it just brings up finder and I get a rainbow wheel with no response and when I right click from the dock it says (app not responding) and I have to quit it.. this happens almost every time and it sucks.. ANy body found how to fix this problem?

thanks