Zope : 2.4.4 beta CMFoption : 1.1 hi, i create some CMFextFile ( id= test.doc , title = test.doc , content = winword document) from CMFOptions product, but when i want to edit it by webdav protocol, my file is in read only. I tried some solution given on the web but with no success. I notice that in the webdav management console, my object doesn't appear as locked whereas a file object open by webdav protocol appears as locked. Other thing , in my zope log : For a CMFExtfile , LOCK header is present but...... For a File LOCK header is present and it's good. Somebody can give me a solution. thanks a lot. fabien