Recently I just experienced Google Chrome instantly crashing when I had updated to the latest Yosemite OSX 10.10.1 update. I also had updated my Chrome Browser installing over previous version, however when I went to reopen Google Chrome it would instantly crash.
The following worked for me and may work for you.
Solution to Google Chrome launch crash on Mac OSX Yosemite
Create a fresh install:
- Uninstall Google Chrome
- Reset your Mac
- Download latest version of Google Chrome
- Install Google Chrome
- You should then be good to go