Samples Segmentation fault

Hi there,

I was trying to run the samples on Astra embedded camera.
The simplebodyviewer-SFML and simpledepthviewer-SFML works fine.
But the simplecolorviewer and simplestreamviewer got the error of “Segmentation fault”.

the output of simplecolorviewer is:

Warning: USB events thread - failed to set priority. This might cause loss of data...
unsupported descriptor subtype VS_COLORFORMAT
unsupported descriptor subtype VS_COLORFORMAT
attempt to claim already-claimed interface 1
Segmentation fault (core dumped)

the ouput of simplestreamviewer is :

Warning: USB events thread - failed to set priority. This might cause loss of data...
unsupported descriptor subtype VS_COLORFORMAT
unsupported descriptor subtype VS_COLORFORMAT
attempt to claim already-claimed interface 1
Changed depth mode: 640x480 @ 30 -> 640x480 @ 30
attempt to claim already-claimed interface 1
attempt to claim already-claimed interface 1
Changed color mode: 640x480 @ 30 -> 640x480 @ 30
Changed IR mode: 640x480 @ 30 -> 640x480 @ 30
Segmentation fault (core dumped)

any ideas for this?
thanks in advance