Alright nevermind. I just downgraded.
Alright for every1 here's a tip!
Go to my computer.
Then Program files
Then double click on limewire.
Go to .NetworkShare
Then boom! all of the installations for the previous installers. Works completely fine, and just use the previous limewire which is 4.16.6
And then the error thing doesn't pop up!
Completely normal. Hope this helps guys!