Firefox 4 tabs don't show

Just installed Firefox 4 RC. No tabs, just a blank blue bar where the tabs should be. When I attempt to open a new tab nothing happens. And I can't open the add-on screen either.

Create a new profile exclusively for the Firefox 4 version and create a desktop shortcut with -P "profile" appended to the target to launch that profile.
* http://kb.mozillazine.org/Testing_pre-release_versions
* http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
* http://kb.mozillazine.org/Shortcut_to_a_specific_profile
* http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox

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SQL Developer version 4.0 Build MAIN-13.80
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so, its a BUG. ?
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Greetings,
(I figured someone else has experienced this issue, but after searching with multiple words I haven't found a thread.)
Using Application Express 4.0.2.00.07. The application in question is using Theme 7 - Modern Blue
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I think I figured it out. There is a section on the page where you can change the Tab Set. It is under Display Attributes.

I imported all my favorites from Internet Explorer, but in the Firefox window I don't see a favorites tab. I've got a bunch of favorites that I don't want to have to redo. Any advice?

Question
I imported all my favorites from Internet Explorer, but in the Firefox window I don't see a favorites tab. I've got a bunch of favorites that I don't want to have to redo. Any advice?

You can usually find the imported IE Favorites in a folder ("From Internet Explorer") at the bottom of the Bookmarks Menu folder (Bookmarks > Show All Bookmarks).
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Firefox 4 tabs don't show

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