If you select OK, another error message appears:  Unable to set com-handle property (5677).   This error message almost always means the path and\or filename for the file you are attempting to auto-launch is invalid.   To check the file path,
  • Run process for your export and load the Saved Report.  
  • Go to the "Send To" tab and click the disc icon to the right of the path and filename of your launched document and browse for your auto-launch file again. 
  • Go back to the Saved Reports tab and click Update to save the change.  
  • Try running the export.