error -50400 on IMAQ FPGA image transfer to target.vi

Hi, all.

I have a problem about error -50400 on IMAQ FPGA image transfer to target.vi.

First, I created a simple vi(image processing host2.vi).

This vi get image from camera, send it to Target(FPGA), then get processed image(binary image) form Target and display it.

This vi works as I expected.

Then, I created a vi that do more complex task(image processing host3.vi).

First step is same as simple one, then this vi conduct more process to modify the image processed on Target and do pattern matching.(template is binary, too.)

But, when I run this vi, this vi can get only first image and process it, then stops with the error -50400.

Error source is :

Invoke Method: FIFO.Acquire Write Region in NI_VDM_FPGA_Basics.lvlib:IMAQ FPGA Image Transfer to Target U32.vi:1980001->image processing host3.vi

I understand this is a timeout error on vi, but don't know how to fix it.

I very appreciate if any help.

Thank you for your attention.

cleska.