Troubles using webdav with cq5.4..

Hi,

I just trying to use webdav in one of my cq5.4 instance..

Here what iam finding is when i upload an image from cq5.4 digital assets itz showing up correct in my webdav folder with generating the rendations for that particular image...

And when use webdav folder to upload image it is showing u[p in the cq dam but rendetions are not getting created..

Is there any solution for this..And images names which are showing with some 1.0 , 1.2 like names in webdav folder...

Can i get help on this...

Thanks,

Sony C