Hi again sjmxru,
May I ask if you have installed any patches? If not then you will either have 1.0, should you own standard R:TW, 1.3, should you own R:TW and BI yet not Gold or it will be 1.5 (R:TW) and 1.6 (BI) should you have Gold. It can work with 1.3, people have suceeded, yet it requires some extra modding to do so which is way beyond my humble knowlage. Hope this helps you, cheers!