Desktop\ CRC failed in arduino-1.5.5\java\lib\

I downloaded the 1.5.5 beta software in order to use it with an Arduino due but when i tried to unzip this is the result and winrar says that the file is corrupt .I have windows xp pro.

Download is fine. Either WinRAR has a bug or something went wrong during the download (like the file was truncated; it should be 138,926,649 bytes).