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Vb.NET 2008 / Crystal reports 2008 possible memory error

Medium Priority
Last Modified: 2012-05-11
I am creating a crystal report from a vb.net dataset using the below lines of code:-

Generally about 90% of the time, the code works fine and the report is created with no issues.  Of the other 10%, when running the below line:-

the application crashes out, with no error reported or caught, even though there is a try...catch around the line.

It looks like the crash is caused by a memory error/issue.  There looks to be a slight pattern which causes this issue, which is:-
When the application is loaded for the first time, the app takes a while to load/run, as it looks like the DLLs are cached (by default) in order to run quicker the next time.  This is mainly when the issue where the above line crashes the application.

Any help would be greatly appericated.
Using rpt As New ReportDocument
     rpt.Load(rptPath & "ContractEndorsement.rpt", OpenReportMethod.OpenReportByDefault)
  Catch ex As Exception
    MsgBox("Failed to load report:" & vbCrLf & rptPath & "ContractEndorsement.rpt" & vbCrLf & _
    "Description: " & ex.Message, MsgBoxStyle.Exclamation, "Application error")
    Return False
  End Try
      'Link the data to the report
      rpt.ExportToDisk(ExportFormatType.WordForWindows, targetDoc)
  Catch ex As Exception
      MsgBox("Failed to export report:" & vbCrLf & targetDoc & vbCrLf & _
      "Description: " & ex.Message, MsgBoxStyle.Exclamation, "Application error")
      Return False
  End Try
End Using

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Most Valuable Expert 2012
Top Expert 2014

How many rows do you have in ds?


There is no particular number of rows when the crash occours.  We have had the error when there has been 1 row, and we have also had the error when there has been many (upto 50) rows.....
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We have had no luck asking around and although the issue happened all the time for a month or so it is very rarely now.
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