Step #7 in the Expanded Vanilla list
The mod description on Nexus Mods explains some known issues with this and OpenMW, but the majority of what OAAB_Data provides works fine.
OAAB_Data file and the
OAAB_Data (HD) file. Extract the
00 Core folder from the main file. Create a folder called
HD in the base mod data path and put the contents of the HD file into it.
Check out the OAAB_Data dev blog here!