Limewire 2.5.5 Pro disappointing at best

I paid the $10 to get Limewire 2.5.5 Pro downloaded it and wished I hadn't. Everytime I open limewire it rehashes my main share folder which has over 600 files in it. This is slowing the app way down. Then I find that I can only share one folder. Either the default shared foler or my folder with all the files I have previously downloaded. Each time I go to options and add a folder the previous one diappears. I have tried setting up a new save folder and sharing that, same results one folder displays the other disappears.
I was much happier before I got 2.5.5 Pro
Any help on the subject would be great