Start a new thread and post your debug.err located in the appropriate folder in your \My Documents\My Games\ directory.
My guess offhand is it's a resolution problem, so try editing your prefs.ini in the same folder (there's one for DA and one for TA). There should be one present at initial install, but of this I am not certain.
In any case, more information would be helpful, which the debug.err will provide.
This is of course assuming this is not a CTD upon new game load (which is entirely different from the game itself loading), in which case, turn off your minor races temporarily; this is a known bug that has been fixed but was not fixed in time for EU, apparently. You'll have it fixed in 2.0, though.
You will be able to register EU and update it to 2.0, eventually. This was already supposed to have been fixed, but they ran into some problems (no, I don't know what), and it is still in limbo.
I see no reason at present why it cannot be resolved within the next 14 days, but I don't work for SD, so I'm sorry that I cannot offer official assurance.