You can't have a color workspace on a black and white machine.

The polygon count for the BSP renderer is 

The Paint renderer requires a workspace pixel depth of 8 or 32 bits.

Please choose a renderer that is available or cancel.

There is not enough memory for a workspace this complex.

There is not enough memory for a model this complex.

This renderer is available.

Use the Draw renderer for high-resolution PICTs and printing.

Use the Paint renderer for on-screen images and shadows.

The current renderer leaves 

There is not enough memory for this pixel depth.

There is not enough memory for this window size.