This is an Action Editor bug: I am editing the "FromExchange" actions that I've downloaded from the forum. Under "Equipment", there are additional equipment items that can be selected under the "From Exchange" list (these are in addition to the "Standard" equipment items). For some reason, if you select "Blindfold" from the list, the "Butt Plug" will also get selected. You won't see it at first; but if you select a different action, then come back, the "Butt Plug" will also be selected in the equipment list. Even if you uncheck it, select a different action, and come back; the "Butt Plug" will be selected again.
The "work around" is just to select the box that "Only one of the items checked needs to be available". I don't have a Butt Plug, so the Blindfold is valid