"Please choose filename encoding for this archive" error.

I have a very old archive of a hard drive that is a Windows Zip format file. I thought I had extracted it successfully using Unarchiver before, but needed to extract it again as the dates in the extracted folder had changed and I wanted a clean extracted version I could then make into a protected ISO image.

I have upgraded to Lion 10.7.3 and have upgraded Unarchived form 2.5 to 3.6.1 from the App Store.

I am now getting the error "Choose the filename encoding for this archive" over half way through the extraction. I found you chord change the encoding in the Advanced preferences dialogue. I did this, but what effect does this have on the rest of the archive? The encoding it wanted was "Japanese (Shift) JIS" and the file it was complaining about was a web favourite.

I know it is not crucial, but I would like all these files to be extracted as is. There is very little information about this error or what to do about it. I do have "Japanese (Shift) JIS" installed on my mac, as I went to the Tokyo Tower website and was able to display the Japanese page successfully and change to JIS encoding without any problem. I don't read Japanese and don't want any of the files in the archive to have incorrect encodings. The normal encoding of the archive should be Western.

Will the file it complains about not be extracted? What about files after that that have the now (incorrect) Japanese encoding?

Information about this would be much appreciated.

Thank you very much in anticipation.