Hello peeps,
I have been trying to upload my first video files to istock however I am getting the error *Enter and upload files before proceding*

So I thought that I had to upload also PAL and NTSC versions of the same clip so I converted the original HD file to PAL and NTSC and tried to upload but I got the same error.
Anybody knows what is going wrong here? And do I need to upload other versions than HD as well every time or uploading the HD is sufficient and IS converts the HD to other file formats internally?
I am using Nikon D7000. Any help will be appreciated very much!
regards
J.