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No valid report source


When printing a report the first page prints fine, but when I want to navigate to the 2nd page or if I want to use grouping the "No valid report source" error message is displayed.

I'm using Visual Studio 2010 Professional and Crystal Reports Version for Visual Studio 2010 (

The code behind sample:

TempSQLString = "SELECT CustomerNumber, CustomerName FROM Customers WHERE CustomerStatus = 'ACTIVE'"

Dim TempDataAdapter As New SqlDataAdapter()

TempDataAdapter.SelectCommand = New SqlCommand(TempSQLString, TempConnection)

TempDataAdapter.Fill(TempDataSet, "TempCRSource")

Dim TempCrystalReport As New crTempReport


crvTempReport.ReportSource = TempCrystalReport

I've read a number of posts all over the net, but none of them really presents a solution with the majority still being unresolved. Can anyone please help?

Thanks in advance!

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  • Best Answer
    Posted on Jul 19, 2011 at 10:39 PM

    Looks like a web app(?)

    And you are doing post backs \ putting the report in session?

    And you've seen KB #1525432 - Could not load file or assembly 'file:///<Path>crdb_adoplus.dll' or one of its dependencies?

    - Ludek

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