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have you put in a using statement for that assembly?
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I put it in my references in the solution explorer (visual studio 2008).
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I added <br />
using DevExpress.XtraCharts;<br />
to the script and code, but still the same error.
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Did you reference the correct version of the file?
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I'm pretty sure... it was asking for 8.1 and that's the version I have added.
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did you just recently upgrade? make a copy of the project's liscenses.licx and then delete it from the solution - then try to build. &nbsp;if that doesn't work just put the old file back in
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<div class="content wysiwyg-content">
I get an error in Report Designer when I run a report CS0012 The type 'DevExpress.Charts.Native.<wbr />ISeries' is defined in an assembly that is not referenced. &nbsp;You must add a reference to assembly 'DevExpress.Charts.v8.1.Co<wbr />re'<br />
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I've referenced it in my project... below is the code in the report.<br />

<pre><code id="code-187986">private void OnBeforePrint(object sender, System.Drawing.Printing.PrintEventArgs e) {
	XRChart xrChart = (XRChart)sender;
	Series series1 = xrChart.Series[0];
	DataFilter dataFilter = new DataFilter(&quot;MMSI&quot;, &quot;Int32&quot;, DataFilterCondition.Equal, GetCurrentColumnValue(&quot;MMSI&quot;));
	series1.DataFilters.Add(dataFilter);
}
</code></pre>
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I get an error in Report Designer when I run a report CS0012 The type 'DevExpress.Charts.Native.ISeries' is defined in an assembly that is not referenced.  You must add a reference to assembly 'DevExpress.Charts.v8.1.Core'

I've referenced it in my project... below is the code in the report.

have you put in a using statement for that assembly?

I put it in my references in the solution explorer (visual studio 2008).

I added 
using DevExpress.XtraCharts;
to the script and code, but still the same error.

Did you reference the correct version of the file?

I&#39;m pretty sure... it was asking for 8.1 and that&#39;s the version I have added.

did you just recently upgrade? make a copy of the project&#39;s liscenses.licx and then delete it from the solution - then try to build.  if that doesn&#39;t work just put the old file back in

DevExpress Error

I get an error in Report Designer when I run a report CS0012 The type &#39;DevExpress.Charts.Native.ISeries&#39; is defined in an assembly that is not referenced.  You must add a reference to assembly &#39;DevExpress.Charts.v8.1.Core&#39;

I&#39;ve referenced it in my project... below is the code in the report.

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).