I'm having trouble animating around the center of sets properly in the Invigorator.
When animating with the Invigorator for AfterEffects, you need to keep in mind that you are never animating the objects themselves. You are animating the Sets, which may have 1 or more objects on each of the 8 animatable sets.
The center of rotation of a set is defined as being the center of the first object applied to an empty set. Let's say that you have all of your objects, such as the word "Monday", on Set 1, and you want the entire word to rotate around the letter M. What you would do is to switch the entire word to set 0, then put the letter M on Set 1. Now, when you put the rest of the letters on Set 1, then center of rotation will be the center of the letter M, because when "onday" was put on Set 1, it wasn't empty, but when the M was put on Set 1, it was empty. You can even use this technique to create an axis object, such as a stick or really thin cylinder, etc., place it where you want the center of rotation to be, move it to an empty set, then move the objects you want to rotate onto that set. At this point, you can even delete the axis object, and the center of rotation is still where the axis object was.
To re-center all of this, in the Effect Controls Window, click on the three cubes to put the software in Sets mode. Then, at the bottom of the Sets menu, there is the Re-Center Pivot command.
Also, make sure you are animating the Set you want to animate, and that you are not animating the Camera by mistake.