i'm a web developer based in manchester. i'm currently faced with a problem with a client's wordpress installation. when you click on a tag link to view posts by tag name you get a 404 error. all the posts with tags on them can be viewed perfectly so long as they are not accessed by tag. i've done a bit of research and i believe it may have something to do with permalinks. i've tried changing the permalink settings but it won't work.
can anyone suggest any cures?
thanks in advance