Objects only showing in White

[asimonen]

I've recently started having a problem where some objects that I edit or insert, such as blocks, only show in white. The photo I show is an example. I recently used viewport clip in order to add in the detail shown on the top right, and when I did so, the viewport went white, and it has since not changed. It is supposed to show in yellow, as shown with the other viewports. When I change to "bylayer" it is white, and when I manually change it, it stays white. As shown, I've changed it manually to cyan, and it remains white. 

I think this may be an obsucre system variable problem, but I'm not sure where to start.

[Jay_B]

Have you tried Auditing the drawing?
Was a polyline used for the Vpclip?
If so was polyline on the same xref layer?
Try Match Properties first selecting a working vp and then the problem vp.

[nestly2]

Welcome to the AutoCAD forums.

My limited experience with VPCLIP is that the clipped viewport will inherit the color of the layer that's current when the viewport is clipped.  The color seems to be "permanent" as overriding the color, or even changing the VP layer seems to have no affect.  Try making your VP layer current, then clip the Viewport again.

*edit*  Actually MATCHPROP does seem to work as Jay suggested.

[GrantsPirate]

When you clip the vport you will end up with a viewport and a pline tied to one another, select them both with a crossing window and change them both to the layer you want, and make sure the color is set for bylayer since you may have changed that.

[doni49]

That might help with the viewport problem.  But since this is happening with other elements as well (re-read the first sentence of the first post), I suspect maybe not.

OP:  can you post your dwg file?

Is this happing with basic lines too?   When it happens, is it every element you place?  Does it eventually start working again (either by correctly showing the ones that WERE incorrect or by placing future elements correctly)?