Problems with light and glass

Hi Guys
i have a little problem with the internal Render of Blender and with the lamps.
Glass makes ugly black shadows. I’ve tried it with different lamp Settings. Receive Transparent is on. What are the right lamp settings?


P.S. Sory for my english

Blender Internal does not support caustics so the shadow will never have the color of the glass. There are ways around it though, check google for “fake caustics blender”

However, in order to cast transparent shadows, you have to set the material that is TO RECEIVE the shadow to display transparent shadows.

Check the material tab for “shadows” and there you’ll find [ ] Receive Transparent. Check it for the material you cast the shadow on. Or check it for all materials, it´ll slow down rendering though.