Everytime I try to download a file, I get the message "Limewire is unable to find a lisence for this file. Dowload anyway?, etc.

I periodically got this when I though I apparently ran accross an unlisenced file, but now I see the message on every single file I try to download. This just started happening. Any thoughts anyone?

On Limewire:
-Go to Tools
-Go to Options
-On the Left side go to Searching
-Where it says:
License Warning - You can choose whether to be warned about downloading a file without a license.
-Click the checkmark box
-Hit Apply at the bottom right corner.

I have always had it checked, but I only got the message every now and then. So I assumed (maybe incorrecly) that the files I was doenloading were lisenced. But now the message pops up on very file I try to download. It just seems something has change without me changing it to my knowledge.