SpeakSpace
Web Conferencing - Troubleshooting

Application Sharing Issues

I am seeing problems while sharing an application and the other Participants say I am continually leaving and rejoining the conference

A poor quality network connection is the likely cause of this. The network is losing your connection to the conference, and so the system has to reconnect you.
Try reducing the amount of data by, for example, not using high color application sharing; sharing fewer applications; sharing a window rather than the whole desktop.

I cannot share applications

If you are having problems sharing applications, or if the options on the Share menu are unavailable, it could be due to one of the following reasons.
  • Application sharing may not be supported on your system. Please see "Is my browser supported?", to check whether your system supports application sharing.
  • If you logged in to the conference as an Attendee, you will not be able to share applications, because conference Attendees do not have permission to share applications. In order to share applications, you must ask one of the Presenters to promote you to a Presenter.
  • If you are logged in to the conference as a Presenter, but another Presenters is currently sharing applications, you will not be able to share anything because only one Presenter can share applications at a time. If another Presenter is currently sharing applications this is shown in the main window when you click the Applications tab in the top right corner; you must wait for the Presenter to stop sharing applications before trying to share your applications again.
  • The first time you try to share applications, a popup window prompts you to accept a security certificate. If you do not accept the security certificate, you will not be able to share applications. If you have declined the security certificate and subsequently want to share applications you must do the following
    • leave the conference by choosing Exit Conference from the Conference menu
    • close all instances of your browser
    • open a new browser and navigate to the conference login page
    • rejoin the conference (if you were the only Presenter in the conference, you must rejoin the conference within 10 minutes of leaving it to avoid the conference being automatically closed)
    • select the application sharing menu option again, and accept the security certificate when prompted.

When I try to share an application, several of my windows get shared, not just the one I select

Some applications, such as Microsoft Word, open multiple documents within the same process.

My shared applications are coming out as black or mostly black rectangles with only small areas that contain application information

Try updating your display drivers to the latest version. If this does not fix the problem then try changing the color depth of your desktop to True Color (24 or 32 bit) mode.

My shared applications are coming out as duplicated rectangles (tiling) and I am using Nvidia TNT hardware acceleration

Meeting Server does not support Nvidia TNT hardware acceleration.

The colors in my shared application are not displayed correctly - they show banding

The conference Presenter who is sharing the application has not specified high color application sharing. Ask him/her to turn on high color application sharing.

My highlight annotations seem to delete each other

Highlights work by swapping colors in such a way that two annotations on top of each other cancel each other out. Try deleting one of the highlights, or arranging your highlights so they don't overlap.

I get the message "Could not start PowerPoint" or "PowerPoint is not installed" when I try to upload presentations

Uploading of PowerPoint presentations is only supported on Windows systems where Microsoft PowerPoint 97 or above is installed. Receiving one these messages indicates that PowerPoint is not installed on the computer. Note that installing the PowerPoint viewer is not sufficient to be able to upload PowerPoint presentations. JPEG files may still be uploaded.

The mouse wheel has no effect when I am controlling or sharing an application from a web browser

Application sharing and controlling do not support mouse wheel input.
This is the designed behavior.
However, where the mouse wheel also acts as a third button, applications that use this feature are supported.

My PC stops responding to mouse and keyboard input

When sharing your desktop, you may find that your PC suddenly ignores your mouse and keyboard input. This can happen if you share your desktop then try to control it using your own viewing window.
Press Ctrl-Esc or Ctrl-Alt-Del to restore normal mouse and keyboard operation.

When I control shared applications, the right and left-hand keyboard keys are not differentiated

When controlling a shared application, there is no differentiation between right-hand and left-hand versions of the same key (for example no difference between right and left shift or the enter key on the main keypad from the one on the numeric keypad).
This is caused by a limitation of Java applets; they cannot differentiate between right-hand and left-hand keys.
If you share an application that requires those keys to be differentiated, you must change the key mappings to remove that requirement.

When I am in control, Alt+f4 is not sent to remote client

If a client hosts an application and a browser client controls it, the Alt-F4 key sequence cannot be sent to the hosting client. Instead of sending the key sequence to the host, the controlling browser is closed (since alt-f4 is the Close keyboard shortcut).
This is the designed behavior.

I cannot control a browser-hosted command line application

Browser hosting is supported across a range of Windows versions, but the support for controlling text based command line applications varies between versions.
Windows 95/Windows 98/Windows ME
These versions call their command line window the DOS prompt and when controlling remotely input may not be possible into the DOS Prompt or any applications running within it.
Windows NT 4/Windows 2000
These versions of Windows call their command line application the Command Prompt. The Command Prompt is capable of running a wide range of types of text application, these types of text application are
  • inbuilt commands, such as cd and dir - these are fully controllable
  • Win32 command line applications, such as net - these are fully controllable
  • DOS applications - these may be started, but if they pause for input then a remote client may not be able to provide it
  • OS/2 command line applications - as for DOS applications
  • POSIX applications - these are fully controllable.
Windows XP
The Windows XP command prompt is only able to run a restricted range of applications compared to previous versions (no support for OS/2 or POSIX applications).
Within this range
  • inbuilt and Win32 command line tools are fully controllable
  • DOS applications may be started, but if they pause for input then a remote client cannot provide it.

I get a SecurityException when making the workspace window full screen

When using a browser with the Microsoft JVM image resources are lost every time you close and re-open the workspace window. If you switch between the normal and full screen workspace window several times the image resources available to the browser are used up and SecurityExceptions can be reported by the JVM.
This resource shortage can be reported to the user in one of three ways:
  • A SpeakSpace Web Conferencing popup indicating the Java Virtual Machine has run out of image resources and the user should restart their browser.
  • A SpeakSpace Web Conferencing popup indicating the Java Virtual Machine has run out of memory and the user should restart their browser.
  • A Windows system popup indicating and exception of type java/lang/SecurityException has occurred.
To recover from this situation you must close down all your browser windows, restart the browser and rejoin the meeting.
If the error is ignored then no images or annotations will be visible in the workspace window.

I do not have an application sharing tab

If the top right corner of the Workspace Window has two tabs, then application sharing is disabled.
You will need to contact your Provider if you want to be able to share your applications.