"Save As" not working, as well as other buttons

I wanted to use "Save As" in one of my projects, but nothing happened after I clicked it. The drop-down menu only dissapeared. And, when I tried to export one of my symbols as a PNG, that also did not work, as well as almost every button you can use. The only shot I have at getting them to work again is closing Animate, but then all my projects would be lost, because the Save As button was not working. What do I do?