Well, it's still impossible to tell which one you are trying to run.
The messages you posted contain lines from Land Desktop. So, if you are running C3D, it looks like you loaded a Land Desktop profile into Civil-3D. That won't work.
But it's also possible that you are trying to run Land Desktop, and you have something configured wrong. In that case, you are actually posting in the wrong group - there's a different one for Land Desktop - but people here might be able to help you anyway.
However, first, we need to know which one you are trying to run, Civil-3D or Land Desktop. Even though they come in the same box, they are completely separate programs. Data can be shared between the two, but otherwise, they are unrelated and incompatible with each other.
Sinc