I have tried everything from re-installing but it still does not work. The only way around it is to use the link tool as normal but take a cope of the URL. Take a look in TEXT mode and you can see that it has not worked. You can then insert it in manually.
Where the link should go, you enter
Then, immediately after the >, enter the text you want to appear as the link and then type
Take a look in TEXT view of a post where you already have a working link and then you sill see what I mean. It is a pain but no one has responded to this post so I am not sure what else to do. I have another technical friend try it out but they do not have the same issue.