I think Ted may have found the problem. There are two wonders with the same ID (11), Tir Quan Training and Terrraformers. I can imagine where this could cause the problem reported in this thread. I can also imagine how it *might* (I don't know the code, so I don't know) cause another reported problem; Tir Quan Training appearing on build lists after it had been built.
If you have had either of these problems and would like to help the people at SD solve it (and feel confident enough to try it), go into your "wonders.imp" file and change the ID for "terraformers" from 11 to 12.
Detailed instructions for anyone that may need them: with Galciv closed:
1). Go into your Galciv\data directory and find the file "wonders.imp"
2). right click on this file
3). Left click "open with".
4). If "notepad" appears in the list, left click it, else left click on choose program, then search the list of candidate applications for "notepad" and click "notepad", unselect the box "Always use ..." and click OK.
5). Go to the bottom of the file and you will see the definition for "Terraformer" (starts with "IMPROVEMENT Terraformer" and ends with "ENDIMPROVEMENT").
6). Locate the ine within this definition that reads "ID 11" and change it to read "ID 12".
If this corrects these problems for you, please post on this thread.