For the examples to work properly, Impact Designer needs to modify your project parameters. We advise you to accept if this is your first time using Impact Designer. Please note that your physical surfaces will be renamed. If you’re not interested in the examples, or if you know what you’re doing, you can of course decline.
Optional: We advise you to create a new object channel for the ProjectileCollision collision profile. By default, Impact Designer creates a new profile but cannot, for technical reasons, create a new object channel.
Then in Impact Settings, you should add IC_Bullet in Impact Contexts with the name “Bullet“.