Just today I found its solution:
1, Install earlier version of Creation Master 10, without uninstall the installed.
2, Install the version you would like to install to, without uninstall the installed.
3, Done, you may continue your edit works.
You may try it out.:)
When i trying to import my FIFA 10 then comes out the error:
************* Exception Text **************
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at FifaLibrary10.FifaFile.CheckIfCompressed(BinaryReader r)
at FifaLibrary10.FifaFile.Init(FifaBigFile...