I thought you said materials were disappearing.  Now you are talking about colors?  Colors of particular materials?  I think a better explanation is in order.

Since you said this has happened in similar drawings I'm guessing it is something you are doing and not necessarily something AutoCAD is doing on its own.

The only real way to see to the heart of the matter would be to attach an actual drawing file to a subsequent post.  Maybe someone here can take a look at it and figure out what exactly is or isn't happening.


Edited by John Connor - 04.May.2016 at 00:11

So picture a 3D IMAGE of a wall, color is then added to various walls in the 3D rendering of a room then saved. Then when computer laptop is restarted all those colors saved are then gone like it was never done.

Ran again here exactly what is being done,
Basically that I am applying material to only a face on a wall object, and when I close out program and restart its not on the wall face, Im not having an issue with applying materials to layers just faces

Ran again here exactly what is being done,
Basically that I am applying material to only a face on a wall object, and when I close out program and restart its not on the wall face, Im not having an issue with applying materials to layers just faces

Corpsman8404 wrote: Ran again here exactly what is being done, Basically that I am applying material to only a face on a wall object, and when I close out program and restart its not on the wall face, Im not having an issue with applying materials to layers just faces

And what procedure are you following?  Given the work I do I rarely, if ever, use materials yet my inexperience did not prevent me from applying a material to a 3DFace which I haven't done in a very long time.