If you want your TriviaScript working with BI, there's a simple way of doing that too.

Go to your "Rome - Total War" folder and open the "ebconfig.xml" with a text editor (rightclick on it -> "Edit")

Then search (Strg+F) for "Rome"

Promptly it should find some line like
Code:
       <ID>RtwStart</ID>
        <Type>String</Type>
        <Values>
            <Text>RomeTW.exe -mod:eb -show_err</Text>
Perhaps the -show_err isn't there, that one I added for myself some time ago I think

Now just change RomeTW.exe to RomeTW-BI.exe so it looks like that:

Code:
       <ID>RtwStart</ID>
        <Type>String</Type>
        <Values>
            <Text>RomeTW-BI.exe -mod:eb -show_err</Text>
Now close the file and save changes (obviously).

Now the TriviaScript works 100% with your Barbarian Invasion All the shortcuts produced by your EB installation should work like a charm now (at least they do for me :) )

No need to copy anything else around.

Of course only if you have setup the rest according to the numerous tutorials (I speak of duplicating&renaming "EB\Data\world\maps\campaign\imperial_campaign" folder)