I have never seen an FSX effect rendered in MCX and I used to create some pretty spectacular ones imo, like this fire foam spray.
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FXEditor can render effects, however that render does not match the FSX render, so it's only useful on that basis. MCX renders the light cone boundary, but no sprayed foam, for me.
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How would I even trigger it? There is no "start" key, like with FXTool or FXEditor. It renders the light wash in night render mode.
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I have effects with names like "RedFlameBouncingSmoke" and "GreenBlobbyFountain," it almost made me want to fire up FSX or P3D, so I could see them all again. You can basically compose, using the in sim editor, I'd love to learn how to see .fx
effects in MCX.
Getting back to the OP:
In both your included images, you show a directory "TOWER" with a .bmp image file and an .fx effects file. This file structure will work for MCX to read model files and find the assigned textures, but it will not work for FSX/P3D. I don't know any file structure where MCX will render effects, the attachpoints are part of the model and will always show as the small axis symbols, but for FSX to render effects, they must be contained in the "effects" folder, textures must be within the texture folder adjacent to the model/scenery folder.
So it would be good to confirm that you know this about the FSX file structure and the above images show a testing set up.