To get the new ARK DLC Aberration running on your server, you will need to do the following:
On our control panel, click steam update to update your server
Then click on custom command lines
Next, you can edit a command line or click on create
Then in the Map box type in Aberration_P
Make sure the box to the left is selected!!
Save the command line, and to the right make sure to click the select button to activate it.