What is the "quick export" feature?

The quick export feature is a separate launcher script that runs the Blender DTS exporter without first launching the exporter GUI.  When the quick export script is launched, the exporter uses the last settings that were selected in the exporter GUI.  The quick export script also re-examines your Blender scene to catch anything new that has been added or anything that has been removed since the last time the exporter settings were modified.  The export should therefore be up-to-date (new dts materials and meshes are automatically added with the default settings, the same way they would be if you had run the exporter GUI again).  It is not recommended that you use the quick export script while the exporter user interface is opened.  If the DTS exporter GUI is already opened, use the export button in the GUI instead.