Thanks but I tried it and it did it again...

Here's what it says:

An older version of limewire appears to be running. You must exit the old version before continuing with the installation.
Once you have exited Limewire, click Retry.

(Note that Limewire may be running in your system tray (next to the time). To exit, right-click on the lime icon and choose "Exit".)

[Abort] [Retry] [Ignore]