Downloaded new 1.6 launcher. Game will not launch.

Put the summary of the bug you're having here

What I expected to happen was...:
The game would launch.

What actually happened was...:
Text on the launcher says things like you can close if the game runs ok, we'll do this automatically later, etc. But then it says things like failed to access memory. Then the game crashes. The game simply cannot be launched.

Steps to Reproduce:
1. Try to launch the game from the launcher.
2. Watch it not work.

3. ...