Not sure if this will help you, because I don't use the particular link cloakers that you mention. However, I do know that sometimes this error occurs because the permalink structure has become discombobulated for some reason. You might want to try updating the permalinks through the settings--simply open up the permalink section and choose "update".
If that doesn't work, then make sure your slugs match your titles on the posts--if they don't simply clear the slug box, save the post and it will give the slug the correct name. I mention this because sometimes a person will change the title of a post but the slug (the actual address) is still set for a different place so by updating it to the correct one, it will clear out problems...
I hope some of this information will help you--usually when there's this type of error I've found it to have something to do with the permalinks and the page/post slugs. Brainstorming