Ok, I get this again File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.
File is 488Ko.
So, not empty.
And I can upload (proof above).
And “Maximum file size allowed is 3000 KB”
Welcome to the forums Arioch, good to see you around these parts.
As for the upload problems, we aren’t exactly sure what it is. My advise is, find another site to upload the pictures on and then insert them into a post using the Insert/ edit image tool in the top bar of the reply box. That always works.