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My IMAQ codes written in LabVIEW 7.1 can not work in ver 8.5

In 2005, I wrote some codes in LabVIEW 7, Window XP to control a linescan CL camera with PCI 1426 IMAQ image acqisition and processing.
Now I try to run the codes in LabVIEW 8.5, Window VISTA with PCIe 1429. I can acquire and see the image (a single line) on the screen in the left window but the subvi "ImageToArray.vi" seems not working properly because I see no signal in the intensity vs. pixel plot0 (in the right upper window on the front panel).

Shall I restore my system to the old version with LabVIEW 7, Window XP?
I have attached my codes for your review.
Please advise. Thanks.

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You have the 16-bit output of the Image to Array wired to the graph. Are you sure the image is 16-bits? Check the Image Type Property node from the NI-IMAQ session and make sure it's not 8-bits.
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