Thank you for the offers to help. Sorry it took so long to reply but I was watching the World Cup.
Following is the exact error message:
C:\Program Files\Ubisoft\SilentHunterIII\data\Interior\NSS_Ub oat21\NSS_Uboat21_RR.000
An error occured while trying to copy a file:
The source file is corrupted
The size of the downloaded files match what is posted here. I plan to install GW 1.1a to a clean copy of SHIII. I have been playing a campaign using NYGM 2.01 on another copy of SHIII that I made. Not sure if the above information is helpful.
From what I have read, I suspect that the first file got corrupted during DL. Also because I get the error message right at the beginning of the install process.
Please forgive my somewhat stilted english as it is not my mother tongue.
Thank You again for your willingness to help.
Greif8