TSUIN0018 Failed to retrieve the editor (IEditorPart) for the opened file. Save- and close-operations will not work properly. {0} If an external editor was opened, you should check your file associations (Eclipse preferences).

The editor which should be used to open the selected file could not be determined. The consequence is that save and close actions won't work properly. Probably there is a file association missing for this file's extension in the Eclipse preferences.

User Response:
Verify that the file association is set correctly for the file's extension in the Eclipse preferences. If not, add a file association for the extension. Otherwise see the message under "Reason:" in the message dialog. If necessary contact the administrator.
Model Administrator Response:
Check the error log for more information.