Thanks for the report, are you using any browser extensions or anything that might mess with your cookies? Those "mismatch token" and "invalid csrf" have to do with the requests you're sending to our server missing some data.
Not that I know of. This is everything installed into the browser:
BetterTTV
OpenH264 Video Codec provided by Cisco Systems, Inc.
Primtime Content Decryption Module provided by Adobe Systems, Incorporated
Widevine Content Dycryption Module provided by Google Inc.
Google Update
Java Deployment Toolkit 8.0.1210.13
Java(TM) Platform SE 8 U121
NVIDIA 3D Vision
NVIDIA 3D VISION
Sockwave for Director
VLC Web Plugin
Thanks for the information. We've received a few reports of this issue but they're very sporadic and we haven't been able to reproduce it ever to debug the issue. We're certain it's related an issue with cookies not being set correctly, or being edited. If you're still having trouble you can try a different browser to see if it has any effect.