A lot of threads with similar problem refer to "MSChart.exe" installation as a solution. You may check whether you have System.Web.DataVisualization dll in GAC beforehand. Also make sure that you have FW 3.5 SP1 installed.
MSChart component is a part of FW 4.0, so if you have got FW 4.0 installed you shouldn't deploy MSChart separately.
Hope this will help.
Igor Savchenko, VIAcode Consulting LLC (http://www.viacode.com/solutions)
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