Firts check your control panel for the "MultiPHP INI Editor" icon.
If available you can change the change the PHP configuration in this area, including upload limits.
If the icon is not available in your control panel you will need to create a php.ini file in the directory that is used by the application and uploading and include the following values...
LimitRequestBody = 0
php_value upload_max_filesize = 32M
php_value post_max_size = 32M
Change 32M to 64M or higher if necessary. Higher will cause your php load to go up and may flag your account so be careful with this setting.
If the above doesn't work please try the following...
edit the .htaccess file in your public_html folder and add the following code...
php_value upload_max_filesize 32M
php_value post_max_size 32M
If the .htaccess file does not exist already you may create a blank file named .htaccess and add the code.
If these changes do not fix your problem, please contact Ultra for support.