I can't add support lib v7 appCompat. I do step-by-step like this: enter link description here (see Adding libraries with resources for Eclipse). And when i do this, i have next:

is ...extras\android\support\v7\appcompat\src folder must be empty?
i try to remove ...extras\android\support folder from disk and download via Android SDK manager in Eclipse, but it doesn't help me.
What i do wrong?