Imaq vision error

hi,
    In my project i have created a vi for a live display of an image. I have created a global variable for the live image to use it in my project, wherever i need it. I have created a local variable of the image in my autofocussing part of the image. When i am using the autofocussing part in another part of my project as a sub vi,i am getting an imaq error Hex 0XBFF60428 not an image. Unable to understand how to handle this vi.Can anyone suggest me for further proceeding of my vi.

Post your code
Randall Pursley

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    Attachments:
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    Instead of
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    Attachments:
    streak.jpg ‏6 KB
    scan0001.PNG ‏66 KB

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