I had always error 1612 with the new limewire update.
I could run limewire anymore.
Now i have limewire back.
I work now with the good old limewire version 1.8c.
i found it at: http://www3.limewire.com/download/
than choose version 1.8c.
After that choose limewirewin.exe when you have windows.

Greetings from belgium.