Hello, I have checked out my MIME types list (on entire Web server level). There was .rtf file type in list with "application/rtf" type. I tried to change it on "application/doc" but without success. Additionally I tried to add new MIME type on web site level - the same results.
Here is few lines from my web site log (when I open and save rtf file):
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 401 2 2148074254
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 401 1 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 WEB\dmsuser 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 207 0 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc/1.rtf - 8080 WEB\dmsuser 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 207 0 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 WEB\dmsuser 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 207 0 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 401 2 2148074254
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 LOCK /doc/1.rtf - 8080 - 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 401 1 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 LOCK /doc/1.rtf - 8080 WEB\dmsuser 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 200 0 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 401 1 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 GET /doc/1.rtf - 8080 WEB\dmsuser 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 200 0 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 WEB\dmsuser 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 207 0 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 401 2 2148074254
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 401 1 0
2009-07-15 06:50:43 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 WEB\dmsuser 192.168.213.40 Microsoft-WebDAV-MiniRedir/5.1.2600 207 0 0
2009-07-15 06:51:10 W3SVC702119511 172.16.16.2 PUT /doc/1.rtf - 8080 - 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 401 1 0
2009-07-15 06:51:10 W3SVC702119511 172.16.16.2 PUT /doc/1.rtf - 8080 WEB\dmsuser 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 500 0 0
2009-07-15 06:51:12 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 401 2 2148074254
2009-07-15 06:51:12 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 - 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 401 1 0
2009-07-15 06:51:12 W3SVC702119511 172.16.16.2 PROPFIND /doc - 8080 WEB\dmsuser 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 207 0 0
2009-07-15 06:51:15 W3SVC702119511 172.16.16.2 UNLOCK /doc/1.rtf - 8080 WEB\dmsuser 192.168.213.40 Microsoft+Data+Access+Internet+Publishing+Provider+DAV 204 0 0
We can see that from IIS side it looks without errors. So here is problem with client side. Right?
Where?
P.S. On station with Windows Vista/Office 2007 there is no problem with rtf files saving.