Update Display missing from menu NX 7.5

Hi ,

I have a problem , the update display command is missing on NX 7.5 ( version 7.5.5.4) which installed in new workstation (window 7) .

The update display is availble on NX 7.5 (version 7.5.4.4) on another old PC.

Pls advice how to activate back the update display command ?

Thanks.

CHUA