can't update pro,
 

Lime wire won't accept my E-MAIL address that I used to buy it with. I go to support and enter my E-mail and it said it is not valid???. I used the same one to get in here...... My computer was cleaned out, and limewire was removed before. I went and reloaded it then. My comcast address hasn't changed. why won't limewire recegnize it.

How long ago did you purchase Pro ??
If it was longer than 6 months ago your subscription would of ran out, meaning you will have to re-purchse Pro to get the new update...

You can use Pro versions for as long as you like, you just can't update to newer versions or get the tech support.
It is wise to always save the installer as when things go wrong as in your case you loose your version...;)