SSRS Data Cache in Development

After some effort I found that data in SSRS Development environment was being cached in a files called <ReportName>.rdl.data
So you may be expecting data to change and finding that it is not. To get around this you can do one of the following:

• Manually delete the <ReportName>.rdl.data each time the data changes
• Right-click the report and press Run
• Use the Run button. The start up item is set in the project properties.
• Following article suggests developers may pull their hair out if they do not realise that data is cached. I did!
  http://blog.summitcloud.com/2010/05/disable-reporting-services-data-cache-in-development/
  This did not work for me. May be it takes a while for it to settle in?
• Microsoft pages are:
  http://msdn.microsoft.com/en-us/library/ms157366.aspx
  http://msdn.microsoft.com/en-us/library/ms160346.aspx

The following error may be due to this cache of data
[rsInvalidExpressionDataType] The Value expression used in textrun ‘InvoiceTitle.Paragraphs[0].TextRuns[0]’ returned a data type that is not valid.

Good luck!