Hoping to stimulate an official response.
I read a great book once by an army general entitled, "Hope is not a method."
I don't believe this one needs errata, as the important wording of Charge re: Reactions, reads…
"When the unit makes a March Move action, it can take a free Attack action at the end of the movement…"
I emphasized the words which clarify it as two separate actions. The first action to get a charge, must be a declared March Move Action, which may trigger a reaction. Pg 34 Reaction to movement rule…
"The reacting unit can choose to take a single Attack or Move action immediately"
In game rulings in other systems I TO for, the term "immediately" always takes precedence over the phrase "at the end of" in order of effects.
LPG. 34 also reads…
"Units reacting to a Move action are subject to the following restrictions:
• The reacting unit must declare and execute its reaction either before the activating unit moves or after it has completely finished moving."
Charge, to me, is clearly an additional free action at the end of a March Move action. Suppress first, then charge is your friend.