Can't use jmfinit and usb webcam or tvcard

I am trying to use jmfinit.exe and it seems to stop after:
DirectSound Capture Supported = true
DirectSoundAuto: Committed ok
JavaSound Capture Supported = true
JavaSoundAuto: Committed ok
Found device Microsoft WDM Image Capture (Win32)
Querying device. Please wait...
at this point it is just stuck!
Please help!
it happens with a webcam and also with a usb tvcard.

The problem is with XP. I tried to reinstall and it worked with the webcam but not with the TVcard. Now I don't understand who or what does it. any ideas?
I have the same problem that when I try to detect the camera in my java program it runs fine when i run it for the 1st time and detects the camera but when i run it again for the 2nd time windows loads a window which asks me to choose source device to capture. When i select the device and press OK i get an io error message saying "io error. An error has occurred. Check jmf.log for details."
However when i close eclipes(my java editor) and then reopen it and when i run the program again for the 1st time it runs fine and creats the datasource and everything but when i run it for the 2nd time i again get the same io error message. So everytime i have to close and reopen the eclipse.
Please help
Preet.

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