[CLIENT][CRASH] Moments after locking in a champ in flex queue, the launcher/client crashes

1. Log in
2. (optional) Wait out the queue dodge timer you got for the previous time this has happened
3. Join ranked flex queue
4. Select (support) (fill) as roles, start matchmaking queue
5. Get into champ select lobby, choose lux in the pre-ban segment
6. Bans occur (doesn't seem to care if you take part in banning or not)
7. Select your champion (i chose lux both times, with the elementalist skin already preselected
8. Lock in
9. Client crashes
10. occasionally, if you are the last person to select a champ, you log back in to the client and are able to rejoin your game. if you are one of the first, it detects the "leave" and the lobby aborts.

Problem signature: Problem Event Name: APPCRASH Application Name: LolClient.exe Application Version: 0.0.0.0 Application Timestamp: 515663e0 Fault Module Name: SS2DevProps.dll Fault Module Version: 0.0.0.0 Fault Module Timestamp: 56e978de Exception Code: c00000fd Exception Offset: 0000a73e OS Version: 6.1.7601.2.1.0.256.48 Locale ID: 1033

Additional Info: Happened twice while selecting lux, but didn't happen when I selected Leona. Will update as time passes.