Link Is Broken

However, the contents of that link (incase you are having trouble) are the following:

If anyone else is experiencing this issue, please follow the below steps to fix it:

Go to the following folder: C:\Users\USERNAME\AppData\Local\Nomadsoft (Replace USERNAME with your username)

Try starting RAT

If RAT still fails to run:
Go to the following folder: C:\Users\USERNAME\AppData\Roaming\Nomadsoft (Replace USERNAME with your username)

Delete everything EXCEPT the 7d2dusa.sdf file.

Try starting RAT

This will cause you to lose your RAT settings, but not your server settings, etc. Sorry about the issue! Welcome to Experimental! ;)