PLEASE NOTE THAT I DO NOT UPDATE OR SUPPORT UnityOSC ANYMORE. PLEASE USE THE FOLLOWING LIBRARIES INSTEAD:
Open Sound Control (OSC) for Unity 3D.
This Github is an actual Unity project. Open the folder in Unity.
The OSC script is named : OSC.cs Its actual file can be found in "Assets\OSC"
Examples for Cycling '74 Max and TouchDesigner are included.
Documentation : http://thomasfredericks.github.io/UnityOSC/