Hyperlink not working

[mamaw]

I have created a database that contains many hyperlinks. After I created the database, I split it into a front and back end. I then made several front ends by copying, pasting and renaming to be used by numerous individuals not needing the same information. My problem is that the initial front end's works fine when a hyperlink is clicked on. One of the other front ends works fine when a hyperlink is clicked on. Then. . .NONE of the others' hyperlinks work. When using these front ends, the rest of the database works with the exception of the hyperlinks. What's gone wrong?