0021 does not start (on win7) - solved ^^

edit: Oooook, I got it! The problem was my windows theme. When I set back to windows classic theme, the program does start up and appears to be working correctly now ^o^

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I just got my Arduino Uno, plugged it in, installed the drivers...everything seems fine, the leds are blinking/on and it shows up in my hardware list as installed. But when I click Arduino exe, the start screen (with the Arduino alpha) shows up and nothing is happening :( the programm is just not appearing. It does also not show up in taskmanager..

Also I tried using an older version (0020), and install newest java again, even reinstalled the drivers for the uno...but it doesnt work either.

I am using win7 32bit ultimate and I dont have any bluetooth in my laptop (nor installed lol).

I need heeelp :'(