Ubuntu – Google Chrome stopped working and won’t open

I'm using Elementary OS 0.3.4 Freya 64 bits. I was just doing okay, but all of a sudden google chrome stopped working. I tried opening again but it just won't work. I uninstalled using sudo apt-get purge google-chrome-stable and installed it again with the .deb from the official website, but nothing works.

I then tried launching it from the terminal and this is what I get:

Gtk-Message: Failed to load module "pantheon-filechooser-module"
[19712:19712:0801/205511:ERROR:browser_main_loop.cc(261)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[19712:19712:0801/205511:ERROR:browser_main_loop.cc(261)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[19712:19712:0801/205511:ERROR:browser_main_loop.cc(261)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[19712:19712:0801/205511:ERROR:browser_main_loop.cc(261)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
[19712:19712:0801/205511:ERROR:browser_main_loop.cc(261)] GTK theme error: Unable to locate theme engine in module_path: "pixmap",
Bus error (core dumped)

I didn't install any update, it just stopped working and never open again. Any help will be appreciated.