[Mudblood]

I'm trying to model a tank, that has a fluid input through one pipe, and a fluid output through another pipe. So to model this, I have created a cylinder for the tank, and attached two smaller cylinders to a face for the inlet/outlets. I where the cylinders touch the tank, I deleted the face of the inlet and outlet pipes, and made a hole in the surface where the inlet/outlets touch the tank.

I then generate the mesh, and that works fine. However, when I open it in fluent, I get the following error:

WARNING: cell 15 or thread 22 has NULL face pointer 3. Clearing partially read grid.

It also gives me (x,y,z) coordinates of the offending cell, so I looked at where it was, and it appears to be around my outlet. I have attached a picture of the area, and dotted the cell with a green point.

Anyone have an idea why this isn't working?