An NPrinting report fails to preview with the error shown below error when the NPrinting connection is of "QlikView Server" QVP type.
Exception Qlik.Reporting.Reports.Tree.Exceptions.FailedReportException: Report generation failed. Error in node of type Qlik.Reporting.Reports.Tree.Template.ImageNode for request 110e9715-bc40-4d2c-a99e-22cfaa929a5c Export from QlikView of chart Document\CH111 as .png image failed Failed object: O\Document\CH111 Template id: CH111
If the NPrinting connection is created as "QlikView local" type pointing to same QlikView report then the report previews normally.
To resolve this issue:
1. Open the QVW document properties
2. Go to the Security
3. Select the 'Allow Export' check box
4. Save the QVW
5. Reload the Metadata connection for the QVW
6. Preview the report
The report should now preview as expected