Many of my students didn’t think it was important to tie the ties at the ends of the warp as well as the ties for the cross. Then they ended up with a problem when they wanted to load the raddle. The first illustration shows the ties (two ties) that need to be made at the end pegs of the warp on the warping board. Note that tie ties are made on either side of the end peg–the ties are essentially both in the same “hole”. This may be what confuses people. See page 23 in Weaving for Beginners. More about tying two ties at the pegs is on page 23 as well.
The second and third illustrations are from page 34. They show the problem when the ties weren’t made and the solution.