Video does not start with geckodriver

I am working with automated tests and I am trying to set up a selenium grid to run tests in multiple environments.

I have run tests successfully with chrome driver on Mac OS X 10.11 and Windows10.

Right now, when I try to run a test function, on the video element page and in the following posts on firefox (geckodriver):

Firefox is installing components needed to play audio or video, please try again later

and the video does not start.

I am running selenium offline on both a hub (Mac OS X) and a Node (Windows 10) selenium grid.

I tried to create a profile and import it in the config node (windowsNodeConfig.json):

{
"capabilities": [
    (...)
    {
        "browserName": "firefox",
        "maxInstances": 5,
        "platform": "WINDOWS",
        "marionette": true,
        "acceptInsecureCerts": true,
        "webdriver.gecko.driver": "geckodriver.exe",
        "firefox_profile": "firefoxProfile"
    }
    (...)
],
"nodeTimeout": 180000,
"browserTimeout": 180,
"timeout": 180,
"newSessionWaitTimeout": 180,
"cleanUpCycle": 5000,
"firefoxProfileTemplate": "firefoxProfile"
}

      

        
        
        
      

    

Version: Selenium Standalone: ​​3.4.0
Geckodriver: 0.16.1
Firefox (Windows): 53.0.3

I run node like this:

$ java -jar selenium-server-standalone-3.4.0.jar -role node -nodeConfig windowsNodeConfig.json -hub http://<IP_ADDRESS>:4444

Start the hub as follows:

$ java -jar selenium-hub/selenium-server-standalone-3.4.0.jar -role hub

The created firefox profile has the site extender extender addon installed . However, in the node logs I see the following line:

JavaScript error: resource://gre/modules/AddonManager.jsm, line 2570: NS_ERROR_NOT_INITIALIZED: AddonManager is not initialized

The same test functions are performed in chrome.

I created a firefox profile as described in: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles#w_creating-a-profile

Am I missing any configuration?