Totally understandable. I think we can get your problem straightened out. I just recently updated to OS X 10.10.2, also, and I can confirm Epic Browser works great on a new Mac.
To run those commands sathi gave you, try this. If you open Launchpad to view your installed apps, look for an icon that is labeled "Terminal" and looks like the following image (the one on the right, probably).
Once you open the app, you'll be able to type or paste the commands sathi gave you. Enter them one at a time, excluding the quotes. Pasting the commands may be best, to avoid typos. Then simply restart Epic, as sathi said.
Also, be sure you do not omit the tilde symbol (the "~") at the beginning. If you enter those commands without the "~" at the front (again, without the quotes), your computer may experience some bad problems.
Hope this helps!