Event code AVAA0-0181-6 while using Reports

Hello, 

When I click on the Reports button of P6 version 7 SP3, I get this error

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*                EXCEPTION  REPORT                  *

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Date:          18-Nov-13 

Executable:    PM.exe

Application:   Primavera P6 Project Management

Event Code:    AVAA0-0181-6

Message:       

  Access violation at address 004F1CB6 in module 'PM.exe'. 

  Read of address 000001CC

Context: 

  1: TfrmMain.actReportsReportsExecute

  2: TCFormManager.SetToolbar

  3: TfrmLogin.FormCreate

  4: 

  5: 

  6: 

  7: 

  8: 

  9: 

  10: 

Detail: 

  Type:        EAccessViolation

  Object Type: TfrmReportInterface

System Info

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Username: bruno   Hostname: PRIMATEST

OS Version: Windows NT ver 5.1, build 2600, Service Pack 3 (Intel Pentium)

Then, if I click Ignore, I can access my reports list, but when I try to Run Report, I get this error:

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*                EXCEPTION  REPORT                  *