1. No application is associated with the specified file name extension.

2. No application is associated with the given file name extension.

3. Do be precise. For example, " Missing file name extension " is better than " File not found. "

4. There is no application associated with the given file name extension.

5. The attachment contains the report data in text format in a file with the file name extension DOC.

6. The report data is available as an attachment with the MHT file name extension.

7. Error launching application,[http://] there is no application associated with the given file name extension.

8. Do not make decisions about the contents of the file based on the file name extension.

9. You edit each type of resource by using an editor associated with its file name extension.

10. You can edit each type of resource by using a default editor associated with its file name extension.