Urgent! Lambert-based textures render as pure black

[Anonymous]

Hi, I'm new to 3d and I'm currently taking a course in it for college, and our first assignment is due monday!

I have a set of textures using Lambert linked to jpg images, and are UV-mapped onto objects. I also have one blinn texture that is naturally black, but is reflective like a mirror. They render fine when editing the object, however, 

THE ISSUE: When imported into a scene containing a Vue landscape (I have Vue XStream installed) and rendered, everything renders fine including Blinn material except for the lambert materials. They are pure black. I also tried adding a seperate, new Lambert material within the scene and have it a plain color, still turns black. 

I have no idea how to fix this and I dont want to start texturing from scratch again, it took me all day!

A few notes: For XStream, I had to apply photometric things to the cameras, mia_photometric_material or something like that to the cameras, so that it wasnt over exposed with Vue's sun. Is this the reason? why would Blinn material render fine then?

[damaggio]

Just make it all Blinns Hiza.

[J450NP13]

Or see if you can select the faces and reverse them.

[Anonymous]

Turns out, the X-stream plugin's default lighting only lights Vue objects and scenery. I had to add a two directional lights (in opposite directions) to light the maya objects in the scene.

I think they were 2000 and 10000 in intensity.