[SOLVED] Problems with installing

I'm trying to install NxOgre and PhysX but I'm getting an error at the build step.
The last step of installing is compiling the NxOgre solution. (for me using the vs2010 one)
But I'm getting this error: c:\nxogre\build\source\nxogreactor.cpp(37): fatal error C1083: Cannot open include file: 'NxActor.h': No such file or directory
And I can also see a red line under #include "NxScene.h" which is right below the NxActor code.
I checked everything I installed and searched my entire pc for the files, but I can't find anything.
I can't find anything on google or this forum either.
Can anyone help me out?

did you install Physx sdk 2.8.4 ?
if you did, file is located here

C:\Program Files (x86)\NVIDIA Corporation\NVIDIA PhysX SDK\v2.8.4_win\SDKs\Physics\include


after that please check if this path is defined

$(PHYSX_DIR) C:\Program Files (x86)\NVIDIA Corporation\NVIDIA PhysX SDK\v2.8.4_win


I installed the latest SDK version which was 3.1 I think. After installing 2.8.4 everything compiled fine. Thanks!