Thankyou for reply.
Yes i have used the wp_debug for view the error.
I have changed wpfmp.class.php file and i have added static functiond but doesn’t work.
Now the error is:
Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method sc_WordPressFileMonitorPlus::format_file_modified_time() should not be called statically in /home/www/wp-includes/plugin.php on line 192
Do you have any idea?