KB907306 web folder update & webdav?

I'm using webdav in some application when I update my webFolder with KB907306
the property dav:displayname doesn't work and the folders appeared with not
correct names it's appeared with its ID not display name.
this occured only if the version of web folders
dlls(Msonsext.dll,Nsextint.dll,Msdapml.dll,Msdaipp .dll) is 12.x
if the version of those dlls is 11.x the display name appeard correctly,I
tried to replace the newer dlls with the dlls of version 11.0.5510.0 and it
worked correctly.