Unable to allocate memory for an incoming image frame. Use IMAQMEM to modify the frame memory limit.

hi,

i try to run my detection of blue code,it was running before but now it showing this errors:

Error in imaqdevice/getsnapshot (line 63)
    [snapshot, metadata] = getsnapshot(imaqgate('privateGetField', obj, 'uddobject'));

Error in Blu (line 28)
    data = getsnapshot(vid);

Error using imaqdevice/getsnapshot (line 65)
A timeout occurred during GETSNAPSHOT.

Error in Blu (line 28)
    data = getsnapshot(vid);

my code is:

clc;
clear all;
close all;

vid = videoinput('winvideo',1, 'YUY2_160x120');
set(vid, 'FramesPerTrigger', Inf);
set(vid, 'ReturnedColorspace', 'rgb');
vid.FrameGrabInterval = 1;
start(vid)

%-------------------------------Variable-----------------------------------------------------%

count_b = 1;
vbt_1_b = 1;
count_2_b =1;

while(vid.FramesAcquired<=1000)

      data = getsnapshot(vid);
      [row col cc] = size(data);

      %----------------------------------------------Blue Detection--------------------------------------------%

       diff_im_b = imsubtract(data(:,:,3), rgb2gray(data));
      diff_im_b = medfilt2(diff_im_b, [3 3]);
      diff_im_b = im2bw(diff_im_b,0.15);
      diff_im_b = bwareaopen(diff_im_b,300);

      bw_b = bwlabel(diff_im_b, 8);
      status{count_b} = regionprops(bw_b, 'BoundingBox', 'Centroid');

      % Display the image
      imshow(data);

      hold on

       x_b = length(status{count_b});
       for n=1:x_b

          rectangle('position',[status{count_b}(n).BoundingBox],'edgecolor','r');
          plot( status{count_b}(n,1).Centroid(1,1),status{count_b}(n,1).Centroid(1,2),'+');

       end

      hold off

      x_b = status{1,count_b};
      if(~isempty(x_b))
             vbt(vbt_1_b) = status{1,count_b}.Centroid(1,1);

             if(vbt_1_b > 1)

              a_b =vbt(vbt_1_b-1);
              b_b= vbt(vbt_1_b);
              if(a_b>b_b)
                 count_2_b = count_2_b +1;  

                  if (count_2_b == 8)

                  fprintf('5')

                  count_2_b = 0;
                  end

              end 
              if(a_b<b_b)

                  count_2_b = count_2_b - 1;
                  if (count_2_b == 1)

                  fprintf('4')

                  end

             end

             end

             vbt_1_b = vbt_1_b+1;

       end

      count_b = count_b + 1;
  end

stop(vid);
flushdata(vid);