Please upload a zip file.

please got mdocs>Options>Test Server Compatibility

And make sure you have all check marks.

Let me know what your results are.

also you may want to check your php.ini file:

upload_max_filesize
post_max_size

If you file is too big this error ==> 1 will occur.

All green check boxes except for Imagick Installed.
and
upload_max_filesize = 1000M
post_max_size = 2000M
file is 2.57M
??

Make sure all these settings are correct as well:

• Check upload_tmp_dir in php.ini. This is directory where PHP stores temporary files while uploading.
• Check open_basedir in php.ini. If defined it limits PHP read/write rights to specified path and its subdirectories. Ensure that upload_tmp_dir is inside this path.
• Check post_max_size in php.ini. If you want to upload 20 Mbyte files, try something a little bigger, like post_max_size = 21M. This defines largest size of POST message which you are probably using during upload.
• Check upload_max_filesize in php.ini. This specifies biggest file that can be uploaded.
• Check memory_limit in php.ini. That’s the maximum amount of memory a script may consume. It’s quite obvious that it can’t be lower than upload size (to be honest I’m not quite sure about it-PHP is probably buffering while copying temporary files).