error unpacking downloaded file

Error: Unable to extract "C:\Users\Andrew\Documents\Unzipped\S6_OpenBeta_2007-08-05a\S6_OpenBeta\base\bba\shrlsnd0.bba".

The size of the extracted file (209236494) does not match the uncompressed size (209236460) recorded in the Zip file

If you can help?

Thank you

Hi I just downloaded the settlers 6 beta and when I go to play it it keeps telling me invalid code and i am using the one they gave me what can I do?