I have a similar problem:
It appears that the frame rate you set in recording is not the actual frame rate, but the limit. I set my limit to 30 and the end result is 28.98, which is incompatible to Cubase when I want to edit the audio inside the video or add to it. The only work around I have found so far is to record my video with a "frame limit", then bring it into Video Pad Editor (which I think may be a trial version and I will later have to purchase it), where it is possible to set a fixed frame rate. Once I fix the frame rate at 30 I can load it into Cubase with no problems.