This dialog box opens when you receive a file with Auto-Detect as the transfer type, and Scan or Ask user are selected under Transfer type for undefined extensions from the Auto-Detect tab.
To continue the file transfer, select a transfer type and click OK.
Add extension to list
Select to transfer every file with this extension using the transfer type you selected from the Transfer type box. The selection is automatically updated from the Auto-detect tab.
If you select this option for a file with no extension, you are adding an association between files with no extensions and the selected transfer type or method. Files with no extensions are listed on the Auto-detect tab as <>.