I've been messing around with a simple project, and recently while trying out Cineware, it seems to render it very dark, the only part of the file that's visible is anything with illumination.
What it looks like in C4D
What it looks like in Cineware AE, on Standard (Final)
Without knowing anything about your scene structure and C4D render settings nobody can tell you much. This simply looks like a single pass from a multipass render rather then trhe full shading.
The scene is lit entirely by a Sky object through GI.
And why? This doesn't make any sense.