Thanks for the heads up. I'm not sure what you mean by red player box... But I have an idea to test that may help me understand what's wrong.
The new version is coming along well. I've simplified the menu system in the next version making it faster to get to gameplay and level editing. I'm currently changing the player select screen to work differently so players can join / exit an active adventure at anytime during gameplay.
The pause menu in game also allows you to exit the adventure.
After that I want to add at least one default campaign that will come with the game in the experimental version. ( That way players don't have to build a campaign in order to play with it )
Hope to have a new version released soon! :)