Movie Maker Appcrash … when saving movie

I am trying to make a movie from a couple .mp4 videos from my Windows phone.  Transfered files to Dell desktop: Windows 7, Window Essentials with Movie Maker 12, Nvidia GeForce Go 7900 GS graphics, 4 Gigs Ram at 2.0Htz.  

The program works well through the editing cycle and saving "project" files .wlmp.  Stupid thing shuts down everytime I try to "save" the movie - no matter the resolution.  The error is:

Problem signature:
  Problem Event Name: APPCRASH
  Application Name: MovieMaker.exe
  Application Version: 16.4.3528.331
  Application Timestamp: 533a401b
  Fault Module Name: nvd3dum.dll
  Fault Module Version: 7.15.11.7948
  Fault Module Timestamp: 498345a2
  Exception Code: c0000005
  Exception Offset: 002250c3
  OS Version: 6.1.7601.2.1.0.256.48
  Locale ID: 1033
  Additional Information 1: 0a9e
  Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
  Additional Information 3: 0a9e
  Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

I have reinstalled Windows Essential and Navidia drivers.  

I remember having this problem and wasting a bunch of time the last time I tried to use Movie Maker - but it seems it would save one out of 3-4 tries.  Or, I might have given up and used some "freeware", but it was much bigger than this job.  The video is only 1min29sec.

Help!   Thanks...