"NetworkError: 500 Internal Server Error - http://example.com/assets/96646869/tiny_mce/tiny_mce_gzip.php?js=true&diskcache=true&core=true&suffix=&themes=advanced&plugins=safari%2Cpagebreak%2Cstyle%2Clayer%2Ctable%2Csave%2Cadvhr%2Cadvimage%2Cadvlink%2Cemotions%2Cspellchecker%2Cinlinepopups%2Cinsertdatetime%2Cpreview%2Cmedia%2Csearchreplace%2Cprint%2Ccontextmenu%2Cpaste%2Cdirectionality%2Cfullscreen%2Cnoneditable%2Cvisualchars%2Cnonbreaking%2Cxhtmlxtras%2Ctemplate&languages=en"
Don't worry, this is the perrmission issue from your folder in the server. To solve the problems is simple
Add the permission folder recursively to 755.
For the example the folder begin from asset/
96646869/tiny_mce
Change the all folder permissions to 755...
Good Luck