Game loading bug crash

Been getting this bug today. When I go to load into a game I get an error pop up.

Title: League of Legends.exe - Fatal Application Exit

Message: memory.c - !IsBadReadPtr(InPtr, InSize)

If i leave the error message open then I can play just fine and everything seems normal. If I click ok then it quits out of league. I have tried restarting client and such and no luck.