Thanks,
I managed to get what I wanted by looking at the source code of the plugin you suggested and combining this with the More Fields plugin. It required some hacking, but it works…
Thomas
I’m also getting this error and I’m uploading a 23kB file, so I don’t think file size is an issue. I only get this error when using WordPress locally (localhost). I tried setting the right permissions and creating a .htaccess-file but none of that worked…
Any other suggestions? I already tried the list at http://wordpress.org/support/topic/164999?replies=1
Thomas
