Addons wont download through manager

[Brophistopheles]

I have been trying to download Eagle's combined mp for the extra races. it wouldn't allow me to download them from the in game manager so i manually downloaded them off the website. When downloading them from the in game manager it would always say Error: a problem occurred when trying to create the files necessary to install this add-on and kick me out of the addon manager. Now after i have downloaded the add-on and added it to campaigns folder and the add on folder i get these messages when loading into multiplier.

Error loading default core game configuration files. The game will now exit.

Details:

Macro/file '~add-ons/Default_Plus_Islanders/macros' is missing
at campaigns/Eagle_CombinedMP_Era/_main.cfg:5
included from _main.cfg:38
Error: Macro/file'~add=ons/Default_plus_islanders/macros' is missing at acampaigns/eagle_CombinedMP_Era/_main.cfg:5 included from _main.cfg:38


The Battle for Wesnoth version 1.14.7 (4ce5b52-Modified)
Running on Microsoft Windows 10 (10.0.17134)

Game paths
==========

Data dir: D:\Steam\steamapps\common\wesnoth
User config dir: C:\Users\USER\Documents\My Games\Wesnoth1.14
User data dir: C:\Users\USER\Documents\My Games\Wesnoth1.14
Saves dir: C:\Users\USER\Documents\My Games\Wesnoth1.14\saves
Add-ons dir: C:\Users\USER\Documents\My Games\Wesnoth1.14\data\add-ons
Cache dir: C:\Users\USER\Documents\My Games\Wesnoth1.14\cache

Libraries
=========

Boost: 1.66
OpenSSL/libcrypto: 1.1.0f (runtime 1.1.0f)
Cairo: 1.10.2 (runtime 1.10.2)
Pango: 1.30.1 (runtime 1.30.1)
SDL: 2.0.8 (runtime 2.0.
SDL_image: 2.0.3 (runtime 2.0.3)
SDL_mixer: 2.0.2 (runtime 2.0.2)
SDL_ttf: 2.0.14 (runtime 2.0.14)

Features
========

Experimental OpenMP support: yes
JPG screenshots: yes
Lua console completion: yes
Legacy bidirectional rendering: no
Win32 notifications back end: yes

And I don't see onedrive on my computer so i don't think its causing a problem.

[Pentarctagon]

The first error could also be caused by antivirus software making the add-ons directory read-only. The second error is probably caused by putting the add-on you manually downloaded into the campaigns directory - add-ons only go into the add-ons directory.

[Brophistopheles]

OK so I removed the misplaced add-ons and uninstalled and reinstalled to have a clean slate. No add-ons are currently on this computer for Wesnoth. How do i change my antivirus software (i use avast free currently) from making the add-ons directory read only? i added them to the exceptions list but still hasn't worked.