After installing Naviate Rebar Extension 2022, Revit will not start or crash. You will be presented for this message that Naviate AC has thown an exception.

You have to run Revit version 22.0.10.28 or later. 

If you are running any other Naviate application together with Naviate REX make sure that you have the same version of all products. I.e. Naviate Structure must have version 2022.1.2 to run together with Naviate Rebar Extension 2022.1.2