I'm using Google Chrome 21 Dev and I can't install
.crx files. I download them, but no popup appears asking if I want to install it. Any suggestions?
This is a known issue for both Google Chrome and Chromium developer channels since version 19. While there is currently no official fix for this, there is a hack to get this to work. For this tutorial, I'm going to use the Reddit Enhancement Suite.
While this is a "dirty hack," it will allow you to install extensions until this bug is fixed.