Issue video streaming with 4-camera adapter board v2

[mkeyno]

Hi
I've been trying to use video streaming with 2 camera(A,C) in opencv project, but the camera stop working after a couple of second
following is my code and error
any help really appreciated
#code

 import RPi.GPIO as gp
# initialize the camera and grab a reference to the raw camera capture
gp.setwarnings(False)
gp.setmode(gp.BOARD)
gp.setup(7, gp.OUT)
gp.setup(11, gp.OUT)
gp.setup(12, gp.OUT)
gp.output(7, False)
gp.output(11, False);gp.output(12, True)
#########################################
#########################################




from picamera.array import PiRGBArray
from picamera import PiCamera
import cv2
import time

camera = PiCamera()
camera.resolution = (320, 240)
camera.framerate = 30
rawCapture = PiRGBArray(camera, size=(320, 240))
display_window = cv2.namedWindow("Faces")
time.sleep(1)
i=0
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):

    image = frame.array
    #DISPLAY TO WINDOW
    cv2.imshow("Faces", image)
    print("image num=",i);i+=1
    key = cv2.waitKey(1)
    rawCapture.truncate(0)
    time.sleep(1)
    if key == 27:
        camera.close()
        cv2.destroyAllWindows()
        break

#error

image num= 89
image num= 90
image num= 91
image num= 92
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/picamera/camera.py", line 1704, in capture_continuous
    'Timed out waiting for capture to end')
picamera.exc.PiCameraRuntimeError: Timed out waiting for capture to end

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/pi/Public/camera test.py", line 29, in <module>
    for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):
  File "/usr/lib/python3/dist-packages/picamera/camera.py", line 1710, in capture_continuous
    encoder.close()
  File "/usr/lib/python3/dist-packages/picamera/encoders.py", line 431, in close
    self.stop()
  File "/usr/lib/python3/dist-packages/picamera/encoders.py", line 419, in stop
    self._close_output()
  File "/usr/lib/python3/dist-packages/picamera/encoders.py", line 349, in _close_output
    mo.close_stream(output, opened)
  File "/usr/lib/python3/dist-packages/picamera/mmalobj.py", line 371, in close_stream
    stream.flush()
  File "/usr/lib/python3/dist-packages/picamera/array.py", line 238, in flush
    self.array = bytes_to_rgb(self.getvalue(), self.size or self.camera.resolution)
  File "/usr/lib/python3/dist-packages/picamera/array.py", line 127, in bytes_to_rgb
    'Incorrect buffer length for resolution %dx%d' % (width, height))
picamera.exc.PiCameraValueError: Incorrect buffer length for resolution 320x240 

[mkeyno]

@ArducamTeam can I have you're advice about this issue