For some reason, finder, mail and all other apple software won't run after the latest update. I've downloaded the combo from apple but since finder constantly crashes, I can't do a reinstall. The disc drive also doesn't seem to work now since it spits out my discs so I can't do a clean reinstall of the OS. Finder also doesn't work on safe mode so all I can do is browse the internet atm. Are there any ways to fix this?