Yellow Bar on Screen

I just updated my Mac (OS 10.8.2) to Lightroom 4.3 (from 4.0).  Now a yellow bar appears on the bottom of the screen when Lightroom is opened.  Attached is a screenshot.  A similar discussion line on Aug 13, 2012 did not yield an answer.  Has anyone else seen this?  Do you know how to remove it?  Thank you in advance.

CJ

Image may be NSFW.
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