Help SUT Owners

[TravSutH2]

Love the forum, long time reader first time poster.
Just took ownership of a 2007 SUT, its beautiful. Took it home and decided to take down the mid tailgate and check out the truck bed, after about an half hour of enjoying my time with my new toy. i decided to put the rear gate backup and close up shop. After closing the midgate, i went to roll up the rear window when a message appeared "rear access door open" i thought huh maybe i didnt close it right. Watching the display i shut the midgate again only to have it stay on. Ive tried turning the ignition off and closing it again to no avail. Has anyone experienced this? Know how to solve it? Otherwise ill have to drive 30 miles to the dealership to get it fixed. I'd hate to have it be something simple.

Thanks for your help.