I'm trying Unity 5.5.0f3 and I have imported the new 2D Toolkit 2.5.7 version to a new empty project and trying to build the project causes compiler error:
Assets/TK2DROOT/tk2dTileMap/Code/tk2dTileMap.cs(225,3): error CS0103: The name `BuilderUtil' does not exist in the current context
Error building Player because scripts had compiler errors