Here's a quick and temporary fix for those who gets an error message about the OceanShader on mission load. It removes the 3d waves, because the shader code was not accepted on Radeon cards. Atleast that's what I think is the problem.
Download the zip and extract the exe into the Battleship Command folder, and then launch the sim from the new exe.
This is for the public version:https://www.dropbox.com/s/bnn2j0ly1vi6wc4/BattleshipCommand_LightHotFix.zip?dl=0
Let me know if it works! And I'll get to work on adding back the waves for Radeon cards.
Sorry about the inconvenience.