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Reenable the RSS-Button Rated 5 out of 5 stars
If you want the RSS-button back, take WinRAR and open the OldLocationBar.jar in your extensions-diretory.
Go forward to /skin/overlay.rss and head for the specific entry (didn't copy it - should be easy to see) and remove it. Press ctrl+s to save it.
If you're done, WinRAR will ask you to update the archive or not. Do the update.
NOTE: Don't have your browser open, while you do this action!