Okay everyone listen please,
No restarting your computer doesn't help unless it has an update, and won't let you do anything else, in that cause, your computer probably would have automatically restarted anyways.
Instead, what it was/is is the patch that Kovu released, it was slightly glitched so people where crashing every now and again, he has made/is making a new patch that should fix these errors. If you continue to still crash here's what you do:
1. Close FH
2. Wait five to ten minutes.
3. Reopen FH
It should work fine after you do this. If it is still crashing, it is a server hiccup, and you need to PM a forum administrator and ask for the server to be reset/checked on. Sometimes its just the server has reached capacity and decides to die and/or fart.
~Ritza <3