Vision acquisition timeout error

Good day! I do not know what is wrong but my VI suddenly stops with a timeout error. I cannot find the wrong thing. Your help would be much appreciated.
Attachments:
QRCodeReader24vi.vi ‏719 KB

Good day sir! Yes, I only need one image for all of my Vision Assistant's analysis. All of my Vision Assistant has an Extract Single Color Plane VI. After executing the first Vision Assistant, the image produced by the lone Vision Acquisition I left is already extracted to its Single Color Plane. This brings error to my remaining Vision Assistant VI for they cannot extract the image to its single color plane anymore because the image is already converted. Why does this happen? I assured that the Vision Assistants are connected in parallel to the Vision Acquisition, meaning every Vision Assistant is connected to the output of the Vision Acquisition.
Thank you for the tip on using Flat Sequence Structure in my VI. It works and doesn't display any timeout error.
I have an another issue. I put a Play Sound File VI. I am sure that I have put the right path but it displays Error 4805 occurred at Play Sound File.vi that it cannot find the sound file. I tried to do this in a new VI without any while loop or case structure and it works.
Also, can you give me a tip what to use to display a certain image file if for example I typed "a", and another certain image file if I typed "b".
So far, the most important part of my system, the image acquisition is resolved. I owe this to you. Thank you, sir!
I attached a screenshot of the Play Sound File error.
Attachments:
PlaySoundFileError.JPG ‏116 KB

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