FCKEditor bugs after transfer

Hi,

After a transfer to a new server, I get weird bugs with images uploader. In the browse images dialog box, I can see, delete and create new folders but I cant upload. I get stuck whit "Upload a new file in this folder (Upload in progress, please wait... 0%)" message and nothing append. I also cant see the thumbnails, I see an empty image instead but fck create the thumbnails after I transfer the image by file manager.

I dont know if this could be related but nothing is save in the cache even if it’s Cacheable default.

Thank you

Did you change the paths in the System Configuration and make sure the assets/images folder is writeable?

Yes, assets/images is 777 and everything else work fine.