I finally found thoses DLLs in the Winxsx folder , they are there but one make FFRender64 crash when rendering in seperate process or background but not when rendering in queue manager FFRender64 is OK then.

I hope SM engineers will find the cause of that problem.

Quote - Hmmm...    'Render In Queue' works!   I finished a simple render of the default scene with Andy without a problem.  I´m rendering a more complex scene with IDL now and the FFRender64.exe process is working hard.    I´ve notified SM.

Well I guess we have exactly the same problem then.

---