After a while using sharepoint (sharepoint services 3.0), a user noticed that she couldn´t add a ms content editor web element in her document.
When i check, i found in then web elements gallery that when i click MSContentEditor.dwp or MSimage.dwp or anyone they all show the following message: ERROR: The file imported is not valid. Check that is a descriptive web element file (*.webpart or *.dwp) and that it´s xml content is correct.
I been searching to download this files and i coudln´t found them. I coudn´t find them no even in the file system of the server where sharepoint is installed.