Skype MFC42.dd Malfunctioning When Using Webcam

Hello,
I used a Logitech Web cam 9000 Pro. When I use a webcam in Skype I get this error:
C:\Windows\system32\MFC42.dll is possibly not developed to operate on screen or consists of fault. attempt uninstalled the system once more applying unique program or communicating with Sysadmin or program source.
I clicked several times just to closed this fault communication and then the camera workings well. I need to re-install the Logitech and Skype program with no profit. Same problems take place with a Microsoft camera. The difficulty looks like everywhere in the system. The web cam workings fine which no issue to another system.
Anyone has an idea?
