Problem with cinema4D

Hello, I have a question of Cinema4D. I would present a project of wallpaper, but when I save my project and I open again the project, appears bugged.
it appears this:
[ missing several plugins used in this scene, saved may result in loss of data plugins.
That can i do to make me not happen?

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hmm thats odd. are you sure you havnt moved any of the textures since you made it

also try rendering it. sometimes the veiwport is glitchy