title: Testing OpenTok flash on multiple browsers, one browser publishes video fine but the other shows a black screen
body: <p>I am getting a blank screen when connecting to an existing session and 
  trying to publish on that.The flash 'allow'/'deny' screen appears but 
  after pressing allow, there is only a black screen with settings icon in 
  the publisher div. what can be the issue? A different browser instance is open as well and that publishes fine.</p>
  
  <p>Here is the log details if you need:</p>
  
  <pre><code>Connected [DEBUG] opentok: OpenTok JavaScript library v1.1.4  
  [DEBUG] opentok: Release notes: http://www.tokbox.com/opentok/api/tools/js/documentation/overview/releaseNotes.html  
  [DEBUG] opentok: Known issues: http://www.tokbox.com/opentok/api/tools/js/documentation/overview/releaseNotes.html#knownIssues  
  [DEBUG] opentok: TB.setLogLevel(4)  
  [DEBUG] opentok: TB.checkSystemRequirements()  
  [DEBUG] opentok: TB.initSession(...sessionId...)  
  [DEBUG] opentok: TB.addEventListener(sessionConnected)  
  [DEBUG] opentok: TB.addEventListener(sessionDisconnected)  
  [DEBUG] opentok: TB.addEventListener(connectionCreated)  
  [DEBUG] opentok: TB.addEventListener(connectionDestroyed)  
  [DEBUG] opentok: TB.addEventListener(streamCreated)  
  [DEBUG] opentok: TB.addEventListener(streamDestroyed)  
  [DEBUG] opentok: Session.connect(22055202)  
  [DEBUG] opentok: TB.checkSystemRequirements()  
  [DEBUG] opentok: TB.sessionConnected: ...sessionId... - 7626c1323c18263598e3f7661151a79a97a43bda  
  [DEBUG] opentok: TB.dispatchEvent(sessionConnected)  
  [DEBUG] opentok: TB.streamCreated  
  [DEBUG] opentok: TB.dispatchEvent(streamCreated)  
  [DEBUG] opentok: Session.subscribe(1695484121)  
  [DEBUG] opentok: TB.dispatchEvent(loaded)  
  [DEBUG] opentok: TB.streamPropertyChangedHandler  
  [DEBUG] opentok: TB.dispatchEvent(streamPropertyChanged)  
  [DEBUG] opentok: TB.initPublisher(opentok_publisher)  
  [DEBUG] opentok: Session.publish([object Object]):undefined  
  [DEBUG] opentok: Pending: publishToSession(...sessionId...,7626c1323c18263598e3f7661151a79a97a43bda,T1==cGFydG5lcl9pZD0yMjA1NTIwMiZzaWc9ZmEyNjkxYzA0OGY1MTA3ZDFjZDVmYWQ2Yjc5MzVkNjdiMDUyMDNjMzpzZX) on component publisher_1  
  [DEBUG] opentok: TB.resize  
  [DEBUG] opentok: Component loaded: publisher_1  
  [DEBUG] opentok: callFlash: publishToSession(...sessionId... ,7626c1323c18263598e3f7661151a79a97a43bda,T1==lPS0xMzc1OTg2NzE5JnJvbGU9cHVibGlzaGVyJmNvbm5lY3Rpb25fZGF0YT11c2VybmFtZSUzRG9uZSUyQ3VzZXJMZXZlbCUzRDE=,22055202) on component publisher_1  
  [DEBUG] opentok: TB.dispatchEvent(loaded)  
  [DEBUG] opentok: TB.deviceAccessHandler: accessDialogOpened  
  [DEBUG] opentok: TB.dispatchEvent(accessDialogOpened)  
  [DEBUG] opentok: TB.resize  
  [DEBUG] opentok: TB.deviceAccessHandler: accessDialogClosed  
  [DEBUG] opentok: TB.dispatchEvent(accessDialogClosed)  
  [DEBUG] opentok: TB.deviceAccessHandler: accessAllowed  
  [DEBUG] opentok: TB.dispatchEvent(accessAllowed)  
  [DEBUG] opentok: TB.micGainChangedHandler:50  
  [DEBUG] opentok: TB.dispatchEvent(microphoneGainChanged)  
  [DEBUG] opentok: TB.echoCancellationModeChangedHandler  
  [DEBUG] opentok: TB.dispatchEvent(echoCancellationModeChanged)  
  [DEBUG] opentok: TB.streamCreated  
  [DEBUG] opentok: TB.dispatchEvent(streamCreated)  
  [DEBUG] opentok: TB.deviceInactiveHandler  
  [DEBUG] opentok: TB.dispatchEvent(deviceInactive)  
  [DEBUG] opentok: TB.streamPropertyChangedHandler  
  [DEBUG] opentok: TB.dispatchEvent(streamPropertyChanged)  
  [DEBUG] opentok: TB.streamPropertyChangedHandler  
  [DEBUG] opentok: TB.dispatchEvent(streamPropertyChanged)  
  [DEBUG] opentok: Session.disconnect()  
  [DEBUG] opentok: TB.sessionDisconnected(clientDisconnected)  
  [DEBUG] opentok: Session.disconnectComponents() - disconnecting publishers and subscribers  
  [DEBUG] opentok: Pending: unpublishFromSession(...sessionId...) on component publisher_1  
  [DEBUG] opentok: callFlash: unpublishFromSession(...sessionId...) on component publisher_1  
  [DEBUG] opentok: Session.cleanupConnection() - removing controller  
  [DEBUG] opentok: TB.dispatchEvent(sessionDisconnected)  
  [DEBUG] opentok: Session.cleanup()  
  [DEBUG] opentok: Pending: cleanupView() on component publisher_1  
  [DEBUG] opentok: callFlash: cleanupView() on component publisher_1  
  [DEBUG] opentok: Session.unsubscribe(subscriber_1695484121_1)  
  </code></pre>