MicroStation / OBD CONNECT - Material Editor & Light Manager error

Hi all,

I have problems with OBD Update 8 and / or MicroStation Update 15. All thing are working fine except 2: every time I try to use Material Editor or Light Manager tools (either via ribbon, tasks or key-in), program crashes. All the other rendering related tools seem to work fine.

I have already installed and reinstalled video drivers, but even if I know I don't have the best computer and / or video card, all worked fine until last week ago or so. In fact I have an older Laptop in which both apps are working fine.

If it may help, I see that when I open a coordination model I have (not a lot of reference models, 15 or so) I noticed that window display is much slower, and is hard to rotate the display. May it be related with the render engine that is used for windows? QuickVision? Something related with PBR materials?

I have updated video drivers, and also tried to uninstall and delete all traces of any Bentley product, cleaned registry, etc etc, reinstalled all again and no luck.

Have these two tools something in common that I am missing and that may be the cause?

Thanks in advance,

Pedro