7DS means the version of the original Sins, not trinity (AKA Diplomacy). While you are able to play the original, trinity comes with version 1.181 I believe. 1.05 is several years old, and I do not think its possible to downgrade.
If you update your game to Trinity 1.2 however (the latest), there are several other very good mods you will be able to play(check this thread for recommendations, even though it was for the last patch I think they are all updated now). 7DS may also be updated for it eventually.
You update the game through Impulse.
