I figured out my issue. When I opened the file and then saved it, it apparently did not save in the correct format. Dunno why. Just using the mediafire file made it work for me, though.
And kite, you don't need to redownload. After you've fully downloaded and installed the game, there will be an option that looks exactly like this,
http://i.imgur.com/ZT5AjJQ.png
Click that and it will uninstall the game but keep the downloaded files. Then, go into the game directory (E:\GamesMailRu\Distrib\packages\skyforge_beta\sky forge_betadistrib19 for me). Delete the file called "manifest.xml" Then download this file and place it in that folder. Right click the new file and choose "Properties" and make sure that "Read-Only" is checked/selected. If it isn't, select/check it and hit apply, then OK/close. Then go back and hit the green button in the launcher to re-install the game. After it's done installing, hit the green button again to launch and it will be in English.

