This may or my not help you. I was having the same problem.

The first thing I did was uninstalled my version of LimeWire.

I then made sure everything in my "shared" folder was moved.

I then did a search on my computer using the word "limewire".

Once the search was finished, I deleted everything that had to do with LimeWire.

I then went and redownloaded the current version of Limewire and once it was loaded it connected with no problems.

I Hope this helps you out!