Can't get youtube movies to play on my San Francisco smatphone ?

[Guest Fred4711]

When i surf to the website of YouTube and select a movie it won't play and gives a "could'n open webpage3 message.

I installed the YouTube app , the same. I installed Flash 10.1 for android 2.1 (because flash 10.2 is for android 2.2 or higher), the same. I turn out and turned on the phone every time.

Please help ?

THX

Fred