I just downloaded the newest limewire pro and it won't run

[Jaymason48]

My old edition of limewire failed a few days ago. (about the time that the new Java release came out for Leopard.) I purchase the latest edition and after the install the icon bounces once and disappears from the dock. It never opens. I have thrown away the new version and reloaded it. The result is still the same. A quick bounce in the dock and then nothing. I am currently running the most current version of all apple releases on my system. (leop 10.5.7)
It is a macbook with maxed out memory and 500 gig drive.

Don't know how to proceed.

Thanks for your help.