*Found a way to make it work*

Well if you have all the files required-
DoAC Trial 14-days
(optional)
Catacombs Expansion
Darkrising Expansion
Antlantis Expansion

Then this is what you do, obviously install them all but not in the same folder.
(example)
NOT CORRECT: Install D:\Mythic\Isles ~ Install D:\Mythic\Isles\Antlantis

CORRECT: Install D:\Mythic\Isles ~ Install D:\Mythic\Antlantis
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If you ever get a problem during installation such as CRC you need to "start from scratch" by redownloading the installer for the current installer with the CRC error. Works for me
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Next once you have installed everything go to what DoAC version you want and open its update.dat (a file) not by clicking on it but by right-clicking then select "Open with" then select "Note Pad". Then delete the current Mythic Patch that it says on it and replace it with one of these codes on this post.

http://uthgard.the-bart.org/modules.php ... topic&t=25

Then save it.
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Then run a DoAC Shard program or Uthgard launcher, where you can download it at this site on the download section.

http://uthgard.the-bart.org

Then if running a DoAC Shard Program, look for the button that makes you select the directory of your DoAC game, NOT EXECUTABLE, the folder which CONTAINS THE GAME.
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You should be able to play the game now~