You only need to run RunMe.bat once.
If you used my full installer file, you shouldn't need to first install Build 11. The Build12.exe and Build12 update.exe in the updates folder from my installer are the official Build 12 installator file and the update file. I put them in there to make sure you would be able to update with my installer.
If you used my full installer file, you shouldn't need to first install Build 11. The Build12.exe and Build12 update.exe in the updates folder from my installer are the official Build 12 installator file and the update file. I put them in there to make sure you would be able to update with my installer.