I have a website (http://radio.ufscar.br) and when I have the quotation symbol ("") in any text of my posts, I get the following error message:
"Fatal error: Call to undefined function mb_decode_numericentity() in /usr/local/www/apache22/data/radio/wp-content/plugins/nextgen-facebook/nextgen-facebook.php on line 1599"
What should I do?
PS: I've got the debug mode activated now.
PS2: Sorry for my bad english!