For those of you not using the beta of 2.0, you may find this helpful. I fixed some bugs prior to 2.0 but it never went up as an update because the fixes were in 2.0, which was supposed to be the next update. However, 2.0 is not compatible with older save games because of some of the changes that had to be made to the save game code. I had to make a 1.97 build for foreign versions, so I'm going to put it up as a link. I can't put it up as an official update because the beta is already up.
If you already have the 2.0 beta or your titlescreen already says 1.97, you don't need this file.
First, download this file to a neutral location:
http://sd.stardock.com/carielf/updateTo197.zip
Extract the files.
If you have Impulse or Stardock Central open, right click on Twilight and choose open containing folder. This opens the GalCiv2 folder. Then double click on the Twilight folder.
At this point, I recommend that you back up the Twilight folder in case something goes wrong while copying the files over or you want to revert to 1.96 for some reason.
Click on the files that you extracted and hit CTRL+A to select all the files, then hit CTRL+C to copy them. Click on the Twilight folder again to bring it into focus and hit CTRL+P to paste. Say yes when it asks if you want to overwrite files.
Run Twilight. If the titlescreen does not say 1.97, something went wrong. Otherwise, you should be good to go.