Textures go missing when I set new scene I have a game menu scene, and when I press start I set the new scene to be the main scene. 

Problem is, most textures disappear leaving a light purple color behind them (not the default one for missing textures), like this: 

In this image for example the ceiling has a texture. What am I missing? It works normally till I set the scene.
Viewport Shading

I think your starting scene is set to "Solid". Ensure it is set "Texture" or "Material".



Render tab shading

One scene might use Shading mode "Multitexture", while the other uses "GLSL". Ensure to use the same mode for all of you scenes.