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how do I open a new tab?

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I click the open tab button to the right of the already opened tab, and nothing happens, then i go to file and click open new tab and nothing else happens either.

I click the open tab button to the right of the already opened tab, and nothing happens, then i go to file and click open new tab and nothing else happens either.

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Un-install the Ask Toolbar, it is known to cause that problem with not being able to open a new tab.

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