This just started happening today, after a couple days of using it with no issue. When I launch the IDE, the frame window with the menus appears, with the little turquoise splash screen in front of it. Normally that disappears after a few seconds. Today, I've tried it numerous times, and the splash screen no longer disappears even after several minutes. Although I'm able to execute menu commands, e.g. Help -> About, the splash screen obscures the help dialog.
@jmporter34, your topic has been moved to the dedicated section for IDE2.0 beta.
After you see the Arduino IDE window appear, do you see an error message displayed in a "toast" popup at the bottom right corner of the IDE window?