MSP 2013 XML import to P6 8.3 error

Hi!
Encountered this error while trying to import MSP XML. Please help.

*****************************************************
*                EXCEPTION  REPORT                  *
*****************************************************
Date:          14-May-2015

Executable:    PM.exe
Application:   Primavera P6 Professional R8.3.6
Event Code:    CNFFC-0867-A
Message:      
  Could not find file C:\Program Files\Java\jre7\bin\java.exe

Context:
  1: TfrmWizImport.RunImportWizard
  2: TDevxMainForm.actFileImportExecute
  3: TCFormManager.SetToolbar
  4: TDevxMainForm.BeforeFormShow
  5: TfrmLogin.FormCreate
  6:
  7:
  8:
  9:
  10:

Detail:
  Type:        EInOutError
  Object Type: TCUltraButton