I follow the instruictions to the letter, over and over and over. I import the left onto the timesline, then the right onto the same timeline, select them both, first the left, then the shift key and select the right so both are selected at the same time. I go to effects, choose 3D and click the box that says merg or mix or whatever it is, at which point the right is supposed to happily pop down beneath the left on the next timeline and allow me to edit in 3d. It doesn''t. Nothing happens The computer has the requisit nvidia 3-D card - top-of-the-line, the ram, 1 TB, running on an i7 processor and cuts through conventional editing like a hot knife through butter. The files are in h264, as they are in the smaller version of the program. So what's the problem with this program, or what am I doing incorrectly?  

per the bullet points this site says to consider:

1. you have the problem

2. it always occurs

3. A dell alienware top-of-the-line 3-D comp

4. Windows 7

5. MAGIX video PRO X download version (CA)