For some reason, mods were unable to use HTML even though they were before.
When I went into the control panel under forum permissions, I noticed that some of the forums had zero in the permission for HTML. I changed this to a one for mods. But, it still didn't work. When I changed all of the forums from a zero to a one for mods, it worked.
That seems strange as I would think I would be able to allow certain groups such as mods to use HTML in some forums and not others.
Thanks.