I apologize to the original poster on some other bbs that found this... but this did work for me.
Trying to open webcam in Yahoo causes it to freeze & can't close program... must reboot system to clear it. Appears to be a kernel loop caused my a missing registry key.
What this system had:
Yahoo 7.0 w/ voice
USB webcam - tried two... LogiTech QuickCam Express & generic digicam/webcam from WallyWorld.
WinXP Home SP2
1gb ram
1ghz Thunderbird AMD
Ancient Gigabyte MB
Full credit for finding this solution goes to the unnamed hero(ine) I am plagarizing in toto... but then again, they probably got it from the Yahoo site so anyhoo...:
[Quote]
after some searching i have found a cure thought i would put it on here in case anyone in the same boat
If Messenger is crashing when you try to broascast your Webcam, please try the following fix:
Shut down Messenger if it is currently running.
From the Windows Start menu at the left bottom of your screen, click Run.
From the input area, type regedit and press Enter. The registry editor application should open.
On the left side, expand the HKEY_CURRENT_USER folder (or key), then expand the Software folder under it and select Yahoo.
If there is a Webcam folder, go to the next step. If there is no Webcam under the Yahoo folder, go to the Edit menu and click New Key and type Webcam.
Select the Webcam folder.
From the Edit menu click on New, DWORD Value and type UseVFW without any spaces.
Double-click on the entry UseVFW and change the entry in Value data to 1. Then click OK.
Exit the Registry Editor application.
Restart Messenger and try starting your webcam by clicking Start My Webcam from the Messenger menu located in the Messenger window.
[/quote]
Worked for me.
lunghd, February 2006