TB 2.0 RC1: Display error

I have just downloaded TBPortable 2.0 RC1. Generally it is fine. But at the very bottom of the screen (below the on line indicator and Download progress, is a window with some garbled HTML. It reads:

<menu id="offlineMenuItem"insertAfter="trashMenuSeparator" label="&offlineMenu.label;" accesskey="offlineMenu.accesskey;">
----^

Where the pointing caret appears to point to the very first <