You can have two places where limited to uploading large files:
- The first in admin panel your site in user group in the parameters "Max size for a single file in Personal File Space (KiB):" or "Max size of all files together in Personal File Space (KiB):";
- Second in parameters php hosting - post_max_size and upload_max_filesize or memory_limit. For see his value try to create a blank php file with one line <? php phpinfo (); and after upload it to the site and call his in a browser and see what values haven in this param in you hosting
Pavlo Tkachenko aka Dayver