Hello,
Just thought I should update to the newest version this morning, and installed "arduino-1.6.5-r2-windows.exe" from the windows installer. The first install went smoothly, but upon running the application, it showed the text all of the way through preparing boards, and then the opening dialog disappeared and no application started. I tried restarting the computer with no avail.
I continued to uninstall and re-install again. This time it went through all of the dialogs and started properly. I changed a few settings in the themes file because i cannot see the colors provided and saved these changes. Then it would not start after reaching the "starting" screen...
I then re-installed a third time, and this time it appears to be working finally. I hope it continues to do so and others aren't experiencing this behavior, but thought the community should be alerted to this strange behavior.