Xerath bug and client crashing bug

First of all, a small bug that I'd like to report is one with xerath's q (and e). Since the latest update, every single q cast, and sometimes ive found to have had the same with the e, the game freezes for a very slight moment, sort of skipping a part of the animation. I played at a vast 32 ms when I first found out about this bug, and it only started since the latest 'big' patch.

The second bug started today, after I had already played 2/3 games. Now after champ select as I would enter the loading screen, a 'System Error' appears with the following text: "A critical error has occurred and the process must be terminated.

Would you like to create a crash dump to aid the developers in troubleshooting this issue? This may take up to 5 minutes.

NOTE: The process may appear unresponsive during this time" And no matter what I decide to do, either create a crash dump or not, my game won't open at all, and it keeps crashing every time I try to close league and re-open it. This has caused me to be unable to play the game, so I'd like to know what to do about this (if there's anything I can do about it), or if it is just another of the million client bugs.