TIG Shadow Projector. I am new to this extension and am trying to generate shadow geometry from a 5 level apartment to compare approved design shadows with those from a proposed amended design. Sketchup is crashing part way through the New Shadow Projection. After reading a thread on this issue I have made the model as simple as possible however it is still crashing part way through the New Shadow Projection. Each level is made up of 2 components, the external wall face and the slab plane, so there are 12 components being Ground, 1, 2, 3, 4 and Roof each x 2 plus site. There is no 'internal' detail. I am also only selecting the faces where shadows are being cast. Any suggestions?