try the method in the root progress thread firstly before asking questions, your venue 8 might be one of the ones that isnt patched yet also download the bluebox app from playstore as that app will most certainly confirm or deny if your tabby can be rooted.
Motorola Moto G aka The Pimpmeister! 8 gb Single sim version x1032 with a 16GB micro usb flash-drive main squeeze
Rooted with Xperience custom rom, and philz touch CWM...
DELL VENUE 8 3830..4.3..stock everything and smooooth.
samsung galaxy s2 LTE i727R.. Finally bit the dust..
Samsung galaxy gio
LG Optimus one
LG optimus L5
HTC wildfire S.
Asus MeMo pad HD 8 and Memopad HD 7
HP Slate 7 Plus 4200ca