MovieMaker Loads AVI Files on Win8 But Not Win7

I began using MM last year on a Win7 Home desktop, which had MM pre-installed, & had no problems making projects with AVI files.

I installed 2012 manually via Essentials on a Win8 (now 8.1) laptop, & again, had no problems making projects with AVI files.

I bought a new Win8 Pro laptop, downloaded Essentials, & it crashes when I add an AVI.

It works fine if I add a JPG or MP4, but not AVI.

The AVI files play perfectly using Media Player on the same Win7 Pro laptop where the crashes occur.

Tried repairing, uninstalling, redownloading, reinstalling, but same problem.

Here's the Problem Signature reported when it crashes:

  Problem Event Name: APPCRASH
  Application Name: MovieMaker.exe
  Application Version: 16.4.3528.331
  Application Timestamp: 533a401b
  Fault Module Name: mcl32.dll
  Fault Module Version: 1.4.0.0
  Fault Module Timestamp: 523b6379
  Exception Code: c0000005
  Exception Offset: 00002e7d
  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

Can anyone help me resolve this?