Hello, can anybody help me up a little here please....???

I had LW 4.13 and when I updated it to 4.14, and now it does not open, I downloaded the Beta Version 4.15, and it doesn´t open either. I already tryied all the possible solutions listed here, and nothing happens.

The limewire logo appears and it seems to be loading, and the progress bar gets to 100%, and then it just desappears, and that´s it....

Please, please help!!, I´m desperate without my LW....

Thank you very much.