1. Download the BattleTech Advanced 3062 Installer from the link provided above.
2. Make sure you have at least 40GB free space on the drive you're installing BTA to; the launcher cache takes up roughly 25GB and the mod files themselves are about 15GB.
3. Use 7zip to open the BTAdvancedLauncher.zip file. It will contain just one file, the BTA 3062 Installer. Drag it into a storage folder (this is required as the installer creates a cache that it updates from, you'll need to keep this in a safe storage place, it needs to be somewhere on your hard drive other than in the Users directory or in the BATTLETECH game folder, put it in a storage folder elsewhere such as D:\Installer Storage).
4. Navigate to your Battletech installation folder. For Steam Users: [..]\Steam\steamapps\common\BATTLETECH
- 4a. Inside your installation folder, create a new folder called "Mods" without quotation marks
- 4b. If you already have a "Mods" folder, wipe it completely clean. Delete all files and folders within it.
- 4c. Whitelist the BATTLETECH installation folder in your anti-virus software. This is a precautionary step and may not be necessary, but some AV programs flag the critical mod files ModTekInjector.exe and QuickStart.exe as suspicious which will prevent the mod from working.
5. Run the BTA installer from your storage folder. Use its target function to point towards your newly created Mods folder. It will pop up a box asking what options you'd like to install from among the DLCs and the Community Content pack. Only select what you want from those options and only select DLC options for which you actually own the DLCs.
6. It will pop up some warnings saying "there's nothing here, is it ok to install?" Just say OK to everything and let it do its work. The first time you run the installer it'll take some time, that's normal, everything is fine. The installer automatically installs the CAB (Community Asset Bundle), you do not need a separate CAB installer.
7. Once you start the game with BTA for the first time, open up Skirmish Mechbay, this loads some assets that the game won't load otherwise. You only have to do it once after you install BTA for the first time.
8. You're done!
Installing BTA in other languages:
The process is the same as above, however once BTA is installed you will need to use the provided tools and instructions found in [..]BATTLETECH\Mods\CustomLocalization in order to apply the necessary language changes. DO NOT DOWNLOAD ANY FILES FROM ELSEWHERE ON THE INTERNET TO DO THIS STEP - they are not compatible with BTA and will likely break your install.
If you prefer videos check out this excellent comprehensive guide made by community member MangaMaD: (Note: the video is now somewhat dated and includes options like enabling Clan content which no longer exist, but the majority of it is still valid.)
Windows Installation Troubleshooting
The Mod Doesn't Initialise Even If I Start Via The Launcher. All I'm Seeing Is The Base Game Menu
Likely cause: BTA was installed to the wrong target location.
Solution: Open the BTA Installer and double check the field labelled "Install Target". It must be the same folder where BATTLETECH is installed, e.g.
C:\Program Files (x86)\Steam\steamapps\common\BattleTech\Mods
(or wherever yours is installed).
ModTek Reports Several Mods Failed To Load
Likely cause: The BTA Installer has been put in the Users directory or in the BATTLETECH game folder.
Solution: Move the Installer (just the BTAdvancedLauncher.exe, do not move anything else such as the XML files or the folder named BtalCache) into a separate storage folder somewhere else such as C:\Storage or C:\BTALauncher (or anything else you want to call it, as long as they're not in the Users directory/BATTLETECH game folder).
Menu Buttons On The Title Screen Don't Work After Installing
Likely cause: Corgi's Performance Fix is not compatible with your PC hardware.
Solution: You will need to reinstall BTA without Corgi's Performance Fixes. Verify the game files on Steam to revert the .dll changes, run the BTA Installer again and when you get to the Configuration Options window uncheck the box marked "Corgi's Perf Fixes". Other than that continue with the installation as normal.
BATTLETECH Is Crashing Unexpectedly
Likely cause: the most common cause of random crashes is your GPU drivers.
Solution: Do a clean install of your GPU drivers. Instructions on how to do this can be found here: https://www.youtube.com/watch?v=F8OLhUAPDq0
ModTek Error: "ModTek Died" During Game Start
Likely cause: A mod folder has been accidentally moved into another mods folder or a zip file is present in a mod folder. ModTek will not load if it finds sub mods or archived files inside mod folders.
Solution: Delete the contents of BATTLETECH\Mods folder and reboot your PC before reinstalling BTA.
Please note: Linux users will not be able to run BattleTech using the "Launch BTA 3062" button in the BTA launcher. You will have to open it through Steam or by running the BattleTech executable file.
WARNING: BTA will not work on ARM-based Macs due to their lack of a GPU. This is not possible for us to fix or do anything about, sorry in advance.
99% of players DO NOT NEED THIS. Downloading the launcher is all you need unless you are specifically directed by a BTA member to get the pre-cache to solve an issue with installation.