Install cert for ASP.NET web site SSL on IIS7 but MMC crashes....

I am tryingt to install a cert for SSL,

To Install Your SSL on Microsoft IIS 7
1.From the Start menu, click Run....
2.Type mmc, and then click OK. The Microsoft Management Console (Console) window opens.
3.In the Console window, click the File menu and select Add/Remove Snap-in. The Add or Remove Snap-ins window displays.
4.Select Certificates, and then click Add.
5.Select Computer Account, and then click Next.
6.Select Local Computer, and then click Finish.
7.Click OK.
8.In the Console window, expand the Certificates folder on the left.
9.Right-click Intermediate Certification Authorities, mouse-over All Tasks, then click Import.
10.In the Certificate Import Wizard, click Next.
11.Click Browse to find the intermediate certificate file.
12.Change the file extension filter to PKCS #7 Certificates (*.spc;*.p7b), select the *_iis_intermediates.p7b file, and then click Open.

at step 7 it crashes and the get following error trace below...

 but the MMC keeps crashing....

Problem signature:
  Problem Event Name:      APPCRASH
  Application Name:      mmc.exe
  Application Version:      6.0.6002.18005
  Application Timestamp:      49e02760
  Fault Module Name:      StackHash_7ae8
  Fault Module Version:      6.0.6002.18327
  Fault Module Timestamp:      4cb74dd3
  Exception Code:      c0000374
  Exception Offset:      00000000000aca57
  OS Version:      6.0.6002.2.2.0.272.7
  Locale ID:      1033
  Additional Information 1:      7ae8
  Additional Information 2:      fab1f7793b8a08e05290bb8ef1ca5c9e
  Additional Information 3:      22d9
  Additional Information 4:      5e35b54246a94b5a4160e03a76c013c7

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GlobaLevelProgrammerAsked:
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CrowerConnect With a Mentor Commented:
you could try to do from a remote machine? Select the server where you want to install
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