How are you handling the name of the pictures. With my Foscams I can ftp to my site with no problems, other than the name of the files that are not static, that is they are picture1,picture2 etc .
Are you using a service that takes your images or is it your software? I used to be able to load a single image every few minutes, then Foscam changed their firmware on their cameras. From that I had to pay a service to pick up my images and then I had to put in an image link to put the pictures. Now, I have a bloom sky and have to put up with that nonsense for the camera (I use my Davis for everything else)