Format of the initialization string does not conform to specification starting at index 0

[Mark]

I am using a trial version of Telerik Reporting and I can't get past a connection string issue. I'm using the HTML5 Report Viewer and running it locally.

I have created a simple report in VS2012 with a SqlDataSource that uses the default connectionstring:

Telerik.Reporting.Examples.CSharp.Properties.Settings.TelerikConnectionString

In my app.config I have the connection defined:

<br><connectionStrings><br>    <add name="Telerik.Reporting.Examples.CSharp.Properties.Settings.TelerikConnectionString"<br>            connectionString="Data Source=(local)\SQLEXPRESS;Initial Catalog=myDB;User Id=xxxx;Password=xxxx"<br>            providerName="System.Data.SqlClient" /><br></connectionStrings>

I can preview the report in Visual Studio, but when I view it through the report viewer I get the error:

Format of the initialization string does not conform to specification starting at index 0

Telerik Reporting is very new to me and I seem to be going round in
circles trying to find the solution. Can anyone shed any light on this?

[Mark]

I found an answer here: http://www.telerik.com/forums/sqldatasource-wizard-sets-connectionstring-to-a-string-of-the-settings-variable-not-a-reference