Error by running the OSG earth showcase

[Parvaaaa]

Hello all,

I am trying to run the OSG earth showcase in OMNeT++6.0 and INET 4.4.1. I also tried INET 4.4.0, but I still have the same error.
I am going to explain what happens when I install INET step by step. This might give you an idea to help me.
With both INET versions 4.4.0 and 4.4.1 this is what happens:

1. I install INET. I build the project and the examples run perfectly.
2. Then, I go to this directory in inet>showcases>visulaizer>osg>earth>omnetpp.ini and click run. I get this error:
   
3. Then, I go to the project properties>OMNeT++>project features and enable the "Visualization OSG (3D)" and "Visualization OSG (3D) showcases" features.
4. Then I run again and I see this error:
   
   I would really appreciate your help.

Best regards,
Parva