New to Magix.  Convert from Vegas so not new to editing.  Glitch when trying to do voiceover video.  The second I hit the audio record button, the video preview stops playing back.  I must be missing something small.  I saw a video of a guy doing voiceover in an earlier version of MEP and video kept playing.  Or maybe it's a glitch in my version 13.0.3.14.  Normally I figure this stuff out on my own but I'm stumped.  Already did searches of the forum and documentation.  It ain't easy doing voiceover something ya can't see!  Any help much appreciated.  Hardware shouldn't be the problem.  Thanks in advance.

AMD A8 6500 quad core,  3.5 GHz,  8G Ram,  2TB HDD.