404 Error when clicking on some more links

I have just recently started to use this program and have so far found it great except for 1 issue.
I have 2 columns that are large text and I use the more link option. In my first column not all of more links wortk 7 out of 10 do and the rest give a 404 page not found error. The second column works great.
If any one has a suggestion on how to resolve that would be great.