[KJDJ]

Mike is it possible your guys pulled the players out of an air-conditiond car or building to set-up outside?
Have your guys set up 30 min early to get the equipment acclimated to the location.

Every owners manual I have ever seen has had words about humidity and condensation.
It's on the same page that says don't cut off the 3rd prong of a grounded cord.

I know you guys in the great white north that use unheated trailers have the same problem going from the cold outside to the warm inside.