I took a look at your file and there are indeed many issues.
You need to get a better understanding of what you're doing by watching some basic C4D tutorials.
I told you to import a .smd into C4D to get an idea of the hierarchy and required Tags for a model export.
Guess you didn't do that.
Parametric Objects, Deformers and Generators cannot be exported to .smd and most other file formats.
They are meant for internal usage only.
So all these things, if they are going to be exported, have to be converted into polygon objects.
Here's an example on how it could look like:
http://www.mediafire.com/download/732he849pc34aqc/snowmountain.zipThe top object is just used for baking textures and deactivated for editor and rendering.
(also doesn't export with the rest when the option only visible objects is selected) the
It was created the cheap and dirty way, simply by using the polygon reduction deformer on a highpoly landscape object,
then UV mapped the result and baked out the shaders color and normal channel.
I recomend you to take a carefull look at all the settings e.g. of the bake texture tag.
Last but not least, if you need to know any in depth information about a certain object, tag, or anything else inside of C4D,
use the built in help system.
Right click on the symbol and choose help to directly jump to the part of the documentation that describes it.