PLEASE HELP! Material Editor's background desapeared!

[Miguel Tano Adanes]

I was changing some properties of a glass material and when I closed the window the background in the preview disapeared! So I opened the Material Editor again and the resul is what you can see in the pic attached.

What's happened?

 

Thanks

M.

[Alejandro Testa]

Try to reload the material from the hard disk.

[Roy Hirshkowitz]

Try restarting AutoCAD.  If that doesn't help try logging on/off your computer.  If that doesn't help try rebooting.  Let me know if any of these works.

[Miguel Tano Adanes]

Thanks Roy and Alejandro,

 

I actually tried all what you suggested me, but no way. The problem was noted alsa just starting the Material Editor as standalone app. I solved the issue by downloading the new version of nXt and installing it!

[Roy Hirshkowitz]

Good.  It's likely the "rnl_probe.hdr" either became corrupted or was deleted somehow.