BIDS 2008 crashed when click on matrix

Hello all,
I have a strange problem with my BIDS 2008.
When I open my Reporting Services project and click on a matrix,
Visual Studio crashes and says me this:


Description:
  Stopped working

Problem signature:
  Problem Event Name:    CLR20r3
  Problem Signature 01:    devenv.exe
  Problem Signature 02:    9.0.30729.1
  Problem Signature 03:    488f2b50
  Problem Signature 04:    Microsoft.ReportingServices.Designer.Controls
  Problem Signature 05:    10.0.0.0
  Problem Signature 06:    4fec7daa
  Problem Signature 07:    44dd
  Problem Signature 08:    9c
  Problem Signature 09:    Y2FFGDCLWE30REJOZXGBYRGJ413ZUMQO
  OS Version:    6.1.7601.2.1.0.272.7
  Locale ID:    1040

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The server is updated with every service pack or hot fix,
so I cannot resolve this problem.
Can anyone help me?

Thanks in advance.

Luis