SQL Server Management Studio crash - Event ID 1023

Sql server Management Studio crash when I try to start it.

Events logged in eventlog;

Event Type:    Error
Event Source:    .NET Runtime
Event Category:    None
Event ID:    1023
Date:        22-07-2008
Time:        18:54:30
User:        N/A
Computer:    SQL01
Description:
.NET Runtime version 2.0.50727.1433 - Fatal Execution Engine Error (79FFEE24) (80131506)

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Event Type:    Error
Event Source:    .NET Runtime 2.0 Error Reporting
Event Category:    None
Event ID:    1000
Date:        22-07-2008
Time:        18:54:31
User:        N/A
Computer:    SQL01
Description:
Faulting application sqlwb.exe, version 2005.90.1406.0, stamp 45ea44e0, faulting module mscorwks.dll, version 2.0.50727.1433, stamp 471ef729, debug? 0, fault address 0x00040a20.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 00 70 00 70 00 6c 00  A.p.p.l.
0008: 69 00 63 00 61 00 74 00  i.c.a.t.
0010: 69 00 6f 00 6e 00 20 00  i.o.n. .
0018: 46 00 61 00 69 00 6c 00  F.a.i.l.
0020: 75 00 72 00 65 00 20 00  u.r.e. .
0028: 20 00 73 00 71 00 6c 00    .s.q.l.
0030: 77 00 62 00 2e 00 65 00  w.b...e.
0038: 78 00 65 00 20 00 32 00  x.e. .2.
0040: 30 00 30 00 35 00 2e 00  0.0.5...
0048: 39 00 30 00 2e 00 31 00  9.0...1.
0050: 34 00 30 00 36 00 2e 00  4.0.6...
0058: 30 00 20 00 34 00 35 00  0. .4.5.
0060: 65 00 61 00 34 00 34 00  e.a.4.4.
0068: 65 00 30 00 20 00 69 00  e.0. .i.
0070: 6e 00 20 00 6d 00 73 00  n. .m.s.
0078: 63 00 6f 00 72 00 77 00  c.o.r.w.
0080: 6b 00 73 00 2e 00 64 00  k.s...d.
0088: 6c 00 6c 00 20 00 32 00  l.l. .2.
0090: 2e 00 30 00 2e 00 35 00  ..0...5.
0098: 30 00 37 00 32 00 37 00  0.7.2.7.
00a0: 2e 00 31 00 34 00 33 00  ..1.4.3.
00a8: 33 00 20 00 34 00 37 00  3. .4.7.
00b0: 31 00 65 00 66 00 37 00  1.e.f.7.
00b8: 32 00 39 00 20 00 66 00  2.9. .f.
00c0: 44 00 65 00 62 00 75 00  D.e.b.u.
00c8: 67 00 20 00 30 00 20 00  g. .0. .
00d0: 61 00 74 00 20 00 6f 00  a.t. .o.
00d8: 66 00 66 00 73 00 65 00  f.f.s.e.
00e0: 74 00 20 00 30 00 30 00  t. .0.0.
00e8: 30 00 34 00 30 00 61 00  0.4.0.a.
00f0: 32 00 30 00 0d 00 0a 00  2.0.....