cannot instantiate graph builder



G.Moyer
07-10-2005, 12:22 AM
On my XPSP2 machine, I can not get my tv tuner card to be recognized by
software, or my recently purchased USB webcam. When I plugged the webcam
in, it load drivers and says hardware is ready for use. But no software
will attach to it. I get errors like "capture device was not detected", and
"cannot instantiate graph builder". I am thinking that I am missing
registry entry(s) for filter(s) or something similar. Anyone have any ideas
how to diagnose this error? I've tried downloading directX to reinstall it,
but as soon as I launch the installer it says finished. I guess it detects
it's already installed. Without some better errors, I don't know what else
to try. Does anyone know how to force DirectX to fully reinstall?

T. Waters
07-10-2005, 12:22 AM
G.Moyer wrote:
> On my XPSP2 machine, I can not get my tv tuner card to be recognized
> by software, or my recently purchased USB webcam. When I plugged the
> webcam in, it load drivers and says hardware is ready for use. But
> no software will attach to it. I get errors like "capture device was
> not detected", and "cannot instantiate graph builder". I am thinking
> that I am missing registry entry(s) for filter(s) or something
> similar. Anyone have any ideas how to diagnose this error? I've
> tried downloading directX to reinstall it, but as soon as I launch
> the installer it says finished. I guess it detects it's already
> installed. Without some better errors, I don't know what else to
> try. Does anyone know how to force DirectX to fully reinstall?

The error message is so strange I had to look it up on Google. I found this:

Q: When I connect my camera to the computer or try to get a live view, I get
an error that says "Cannot Instantiate Graph Builder", what do I do to fix
this?
A: If this message appears, then it means you will need to update your
Direct X. Direct X is the software that is used on your computer for your
video graphics. To update, go to www.microsoft.com/directx

Do you use a webcam on your computer? Perhaps the icon thing you saw
represented a camera?

Do you have Photoshop?

G.Moyer
07-10-2005, 12:22 AM
Hi, yes I am trying to use a new USB webcam I got. But I had the problem of
my TV Tuner card not working before, and I'm sure the two are related. I
found the same link that you did. Since I have SP2 already installed, I
have DirectX 9.0c on my system. When I download and try to reinstall, it
does not do anything to try to install. It sees that it is already
installed, and just quits. I saw another post that said reinstall SP2, and
I may try this. No, I do not have photoshop.

> Q: When I connect my camera to the computer or try to get a live view, I
> get
> an error that says "Cannot Instantiate Graph Builder", what do I do to fix
> this?
> A: If this message appears, then it means you will need to update your
> Direct X. Direct X is the software that is used on your computer for your
> video graphics. To update, go to www.microsoft.com/directx
>
> Do you use a webcam on your computer? Perhaps the icon thing you saw
> represented a camera?
>
> Do you have Photoshop?
>
>

G.Moyer
07-10-2005, 12:23 AM
Fixed my problem finally. I just had to register the file qcap.dll (or
something like that). This goes along with quartz.dll.

>> Q: When I connect my camera to the computer or try to get a live view, I
>> get
>> an error that says "Cannot Instantiate Graph Builder", what do I do to
>> fix
>> this?
>> A: If this message appears, then it means you will need to update your
>> Direct X. Direct X is the software that is used on your computer for your
>> video graphics. To update, go to www.microsoft.com/directx
>>
>> Do you use a webcam on your computer? Perhaps the icon thing you saw
>> represented a camera?
>>
>> Do you have Photoshop?
>>
>>
>
>


cannot instantiate graph builder