No Errata
Q: How does Spectral Wings interact with Invisible Walls?
A: If both of these cards are played in the same power step, in any order, the first fighter to make a Move action in the next activation has a Move characteristic of 3.
Q: How do Move modifiers interact with Invisible Walls?
A: Invisible Walls sets all fighters’ Move characteristics to 1, then any modifiers are applied to those characteristics of 1. For example, if a fighter has the Great Speed upgrade, in the activation in which Invisible Walls is in effect that fighter would have a Move of 2.