1074396064 error on casting buffered image

[ET]

Hi, I am trying to use the multiple camera acqusition.vi example in my code to display and do pattern matching on two images at once.  Trouble is, the pattern matching vis in the vision library seem to require 8 bit images, but I cannot cast the buffered images to 8 bit (error 1074396064).  I have IMAQ 3.1 and LV 7.1.  The buffered image is acquired with the low level vis buffer setup, start, and copy image from board to system.  Thanks

[ET]

Changed bit depth in MAX to 8 bits and its OK