CTS Building Builder Pro 1.0.59

Install through SketchUp Extension Manager, restart SketchUp, and confirm v1.0.59 in the main panel.

Ceiling correction
- Centre Cove Down – Border Flat now creates a flat upper perimeter and the complete dropped-centre cove construction.
- The centre assembly contains the centre board, opening, centre cove lip, lighting pocket, vertical step and upper closing board.
- Border Down – Centre Flat remains the simple continuous single-step option.

Picture guides
- The former combined Help button is replaced by Ceiling, Window, Door, Groove, Wall, Room, CAD and Other guide buttons.
- Each guide window lists only the tools from its selected category.

Validation
- All category mappings resolve to available picture guides.
- The centre-cove assembly is checked for all five modelled board groups and its opening, lip, light-gap and rise inputs.
- Main interface and guide JavaScript pass syntax checks.
- Native geometry should be verified in SketchUp on a rectangular room and one irregular room boundary.
