I can not save any configuration from the administration panel, after saving the settings clean the cache. There are no written records and no error message is seen.
Thanks in advance.
There is two possible problem
1) page coming from cache ( first check is that configuration save into core_config_data)
2) php post size issue
add below thing into a .htaccess file
php_value upload_max_filesize 10M
php_value max_input_nesting_level 128
php_value max_input_vars 7000
If it will help you then mark as a solution or give kudos.