Streaming from U3 channel error

Hi,

I wrote this subfunction to stream from my U3 when called. I want to stream for a certain number. e.g looptime=3 means I'll stream and store the data from 3 different cycle. If my numscan is 2000, I want to store the value in a array capable of taking them. My code here is supposed to do that but I keep getting an error.

CODE

function [time,allvalue]=LJ_Stream_func(loopAmount,delay,numScans,takedata,scanRate,dblCommBacklog, dummyDoubleArray, AqTime)

ljasm = NET.addAssembly('LJUDDotNet'); %Make the UD .NET assembly visible in MATLAB

ljudObj = LabJack.LabJackUD.LJUD;

[ljerror, ljhandle] = ljudObj.OpenLabJack(LabJack.LabJackUD.DEVICE.U3, LabJack.LabJackUD.CONNECTION.USB, '0', true, 0);    

%Start the stream.

    [ljerror, dblValue] = ljudObj.eGet(ljhandle, LabJack.LabJackUD.IO.START_STREAM, 0, 0, 0);

     %Init array to store all data in acquisition loop

        allvalue_final= [];

        time_final=[];

        

    %Read data

    for i=1:loopAmount

        %Loop will run the number of times specified by loopAmount variable

        %then read however much data is available.

        %Thus this delay will control how fast the program loops and how

        %much data is read each loop. 

        pause(delay);

        %Init array to store data

        adblData = NET.createArray('System.Double', AqTime*1*numScans);  %Max buffer size (#channels*numScansRequested)

       

        %Read the data.  Array we pass must be sized to hold enough SAMPLES, and

        %the Value we pass specifies the number of SCANS to read.

        numScansRequested = numScans;

        [ljerror, numScansRequested] = ljudObj.eGetPtr(ljhandle, LabJack.LabJackUD.IO.GET_STREAM_DATA, LabJack.LabJackUD.CHANNEL.ALL_CHANNELS, numScansRequested, adblData);

        

        

        %Each data as sort in this order (Chan1,Chan2,Chan3,Chan4,Chan1,Chan2....)

        %Sort the data in columns

           for ii=1 : (numScans)

 

                  takedata = takedata +1 ; 

                  allvalue_initial(ii)=adblData(ii);

                  allvalue_final= [allvalue_final,allvalue_initial(ii)];

                  time_initial(ii)=(takedata/scanRate);

                  time_final=[time_final, time_initial];

 

           end

        

        [ljerror, dblCommBacklog] = ljudObj.eGet(ljhandle, LabJack.LabJackUD.IO.GET_CONFIG, LabJack.LabJackUD.CHANNEL.STREAM_BACKLOG_COMM, dblCommBacklog, dummyDoubleArray);

                       

                                 

    end

    

    %Stop the stream

    ljudObj.eGet(ljhandle, LabJack.LabJackUD.IO.STOP_STREAM, 0, 0, 0);

    

    %Pass the value of the function to matlab for treatment

        

         assignin('base','allvalue',allvalue_final);  

         assignin('base','time',time_final);

      

    disp('Streaming has stopped. Data collected succesfully. ')

    

endCODE:

ERROR:

xceptionObject: [1x1 LabJack.LabJackUD.LabJackUDException]

         identifier: 'MATLAB:NET:CLRException:MethodInvoke'

            message: 'Message: Error in the application.…'

              cause: {}

              stack: [5x1 struct]

This error freezes my computer sometimes. What could be the problem? Please help.

Thank you.