Crazy Ish

Okay, when I try to invite my friend's to a game, instead of my friends list popping up, I get a list of around 50 random names I have never seen before. That is just a side dish of the main problem which is me not being able to join games my friends have invited me to or being able to invite myself. When i try to do both of these things i get an error message and it says the client has sent a bug to roit. Has this happened to anyone else?