Normally you need to cook the unreal projects using Unreal for aximmetry editor not original unreal editor so try to recook your project using this software

Hi Mehdicrt,

As Ahmed mentioned, Aximmetry only supports projects cooked with Unreal Editor for Aximmetry. 

Hi, I tried with unreal for aximmetry and it worked but i can't install Vray for unreal into (unreal edito for aximmetry). Please can you help me ?

I think that Aximmetry DE currently support only Unreal Engine factory plugins.

https://aximmetry.com/wiki/index.php?title=Software_Version_History

Thank you som much for your support. But i want to know how can i import a vray scene into "Unreal editor for aximmetry"
When i installed vray for unreal into "Unreal editor for aximmetry" i got this error

Dear Mehdicrt,

VRay is a third-party plugin, hence why it is not yet supported on Unreal Editor for Aximmetry. We are working on a new release that will theoretically support all third party plugins. Hopefully, it will be out soon.