JMF Improper call to JPEG library in state 210

Hi
I would like to discuss an issue that has been driving me mad for quite some time now.
I have an application that displays the stream of a microsoft webcam with WDM interface, and grabbing a frame in order to create a photograph of my users, everything works just fine but sometimes (like 1 every 15), the stream does not display and instead a purple square does. I check the console output and this message from stderr displays over and over again:
Corrupt JPEG data: 266315 extraneous bytes before marker 0x2a
Unsupported marker type 0x2a
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
Improper call to JPEG library in state 210
and only if I reinit my application the streams shows up again. I´ve tried everything but still getting this error, do you know what the source of this problem may be? have you encountered before?
Thank you

I looked more into the JMF stream and found that every time the processor does not configure the stream does not send indication for begening and end of frames. The way I determined this was by checking SBIT=0 and GOB=0 , indicating start of new frame.
I don't think is illegal as per the RFC, could anyone tell me what could be going wrong here.
Any help will be greatly appreciated.
Cheers

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