Hello,
I am a Unity developer with 3+ years of experience and completed 15+ projects successfully. I can work on every aspect of game development (gameplay, sfx, vfx, in app purchase, advertising, social integration, backend service integration, multiplayer).
As your description your project is built with Unity 4.6.1f pro. I think your project should be upgraded to recent Unity version first to work with latest api. Then you should change/upgrade your plugins. I can help you with all of these. Let's talk about the project in details. Thanks for your time.
Best regards-
Hasib Ahmed