Sir , we are really sorry about this. Will you kindly check the extension or the Anti-virus options... Then if you will still face the same problem kindly re-install the firefox

Thank you :)

where do I check the anti-virus options?

I´ve already deleted everything and re-installed it... no changes.

I forgot, I have been using avast recently but i disabled it now, so it shouldn´t interfere. I have no other anti-virus applications running unless there is already an integrated one in Firefox?

Are your videos running properly now?

sadly not, i disables everything before posting here. I have no clue, what´s causing the problem...

What media player is used if you check this via the right-click context menu of the player area?

Is that the HTML5 media player or a Flash based player?

A Flash based player shows a Flash context menu.

well, for nba.com in Firefox it tries to use flash player i guess. NFL works fine with "NFL video player flash". Nba in Chrome shows: "Build20150821 Powered by NeuLion, and uses flash too... So they all show the flash player menu.

A Flash player should work unless you have an extension or security software that blocks specific content.

If you use extensions (Firefox menu button/Tools > Add-ons > Extensions) that can block content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then make sure that such extensions aren't blocking content.

I really tried everything, extensions enabled, disabled, deleted, firefox re-installed without anything added to it, I updated the plugins and java. It really drives me nuts. And it´s the exact same thing for Safari...

Try to set this pref to false on the about:config page:

• media.apple.mp4.enabled

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

Thank you all for the answer, but it doesn´t change...

Does anyone else have an idea?

Hello, ive just reinstalled flash player, the debugger version, and now, trying to open "http://watch.nba.com/video/teams/pacers/2015/10/13/1444751614176-vogel.f4v-55241?tab=3" It shows: An Action Scripts error occured: Error: Error #2134: Cannot create SharedObject. at flash.net::SharedObject$/getLocal() at neulion.iptv.pc.ui::BasePlayerAdaptive2/initCC() at neulion.iptv.pc.ui::BasePlayerAdaptive2/listenInit() at neulion.iptv.pc.ui::BasePlayerAdaptiveChromecast/listenInit() at nba.iptv.pc.ui.player::VodPlayer/listenInit() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core::UIComponent/dispatchEvent() at mx.core::UIComponent/set processedDescriptors() at mx.core::Container/createComponentsFromDescriptors() at mx.core::Container/createChildren() at mx.core::UIComponent/initialize() at mx.core::Container/initialize() at nba.iptv.pc.ui.player::VodPlayer/initialize() at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded() at mx.core::Container/http://www.adobe.com/2006/flex/mx/internal::childAdded() at mx.core::Container/addChildAt() at mx.core::Application/addChildAt() at mx.core::Container/addChild() at mx.core::Container/createComponentFromDescriptor() at mx.core::Container/createComponentsFromDescriptors() at mx.core::Container/createChildren() at mx.core::UIComponent/initialize() at mx.core::Container/initialize() at mx.core::Application/initialize() at vod/initialize() at mx.managers.systemClasses::ChildManager/childAdded() at mx.managers.systemClasses::ChildManager/initializeTopLevelWindow() at mx.managers::SystemManager/initializeTopLevelWindow() at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::kickOff() at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::preloader_completeHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.preloaders::Preloader/timerHandler() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() and

TypeError: Error #1009: Cannot access a property or method of a null object reference. at vod/getCurrentBitRateVODValue() at vod/getPublishPointBitrate() at vod/playVideoAfterAd() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core::UIComponent/dispatchEvent() at neulion.iptv.pc.ads.player::BasePlayerGIMAAd/listenAdComplete() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core::UIComponent/dispatchEvent() at neulion.iptv.pc.ads::NLGIMAAdPlayer/listenAdComplete() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at MethodInfo-12500() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.ads.ima.formats.common::AdsManagerImpl/dispatchEvent() at com.google.ads.ima.common::DeferredEventDispatcher/dispatchAllDeferredEvents() at com.google.ads.ima.formats.common::AdsManagerImpl/adEventHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.ads.ima.formats.common.video::VideoAdImpl/adCompleteHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.ads.ima.formats.vast.ui::AbstractVideoAdRenderer/redispatchHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.ads.ima.formats.common.video::YouTubeChromelessPlaybackEventsSource/handleVideoComplete() at com.google.ads.ima.formats.common.video::YouTubeChromelessPlaybackEventsSource/videoCompleteHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.ads.ima.formats.common.video::YouTubeChromelessPlaybackImpl/playerStateChangeHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.youtube.swfproxy::SwfProxy/onExternalEvent() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.youtube.model::YouTubeEnvironment/broadcastExternal() at com.google.youtube.application::VideoApplication/setExternalState() at com.google.youtube.application::VideoApplication/onAfterMediaEnd() at com.google.youtube.application::WatchPageVideoApplication/onAfterMediaEnd() at com.google.youtube.application::VideoApplication/onEndScreenEnter() at com.google.youtube.application::WatchPageVideoApplication/onEndScreenEnter() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.youtube.time::CueRangeManager/handleCueRangeEvents() at com.google.youtube.time::CueRangeManager/internalSync() at com.google.youtube.time::CueRangeManager/sync() at com.google.youtube.time::CueRangeManager/onPlayerStateChange() at com.google.youtube.application::VideoApplication/onVideoStateChange() at com.google.youtube.application::WatchPageVideoApplication/onVideoStateChange() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.google.youtube.players::BaseVideoPlayer/setPlayerState() at com.google.youtube.players::HTTPVideoPlayer/setPlayerState() at com.google.youtube.players::TagStreamPlayer/setPlayerState() at com.google.youtube.players::BaseVideoPlayer/end() at com.google.youtube.players::BaseVideoPlayer/onProgress() at com.google.youtube.players::HTTPVideoPlayer/onProgress() at com.google.youtube.players::TagStreamPlayer/onProgress() at com.google.utils::Scheduler/dispatchEvent() at com.google.utils::Scheduler$/run() at Function/http://adobe.com/AS3/2006/builtin::apply() at com.google.youtube.application::VideoApplication/guardedCall()

Please HELP? THANKS