Hello,
my name is Adam Rogers and herein lies my problem.  I had and purchased Limewire Pro. 4.18.8
The problem I am having is that my laptop that I had Limewire on crashed.  I have another laptop but now my Limewire is only 4.12.  Luckily I had this back up copy.  I have the old installer but it does not work.  It says that it's the LimeWire 4.18.8 Installer.   That is how I know I had 4.18.8.  What can I do?  I cannot buy or upgrade it, as I am temporarily disabled and unemployed.  What can I do? How do I get another installer? 
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