background becoming pink (photoshop 3d)

[sh5EF3]

when I using  3d photoshop the background changing color to pink. I can't do anything. how can I fix this problem? 

thanks 

[Ged_Traynor]

Hi

If you're using the most recent version, try enabling this option in preferences and restarting Photoshop to see if it helps

[sh5EF3]

thanks but unfortunately still not working