You should download Ender's Custom Client. Search the forum, find mediafire files, download the base files and the update, unpack, merge, fire run.bat .
Port exceptions in firewall/router: UDP 1870 + TCP 1871
If you encounter other problems with Ender pls post in the Ender thread at WT: viewtopic.php?f=27&t=14575
Avatar by SacreDoom Java 8 - manually downloads - good to check for actual versions url here: viewtopic.php?f=42&t=40331 Remember what the dormouse said: Feed your head Feed your head