Error updating 4.6 project to 5.0 version

Hi, I just upgraded an old unity 4.6 project to unity 5 and Im getting these 3 new errors that do not occur in my 4.6 version and are preventing me from running my project. Could someone explain to me whats the problem and how to fix it?

Code (csharp):

1. Assets/Standard Assets/Scripts/Utility Scripts/MeshCombineUtility.cs(27,74): error CS1061: Type `UnityEngine.Mesh' does not contain a definition for `GetTriangleStrip' and no extension method `GetTriangleStrip' of type `UnityEngine.Mesh' could be found (are you missing a using directive or an assembly reference?)
2. ---------
3. Assets/Standard Assets/Scripts/Utility Scripts/MeshCombineUtility.cs(152,73): error CS1061: Type `UnityEngine.Mesh' does not contain a definition for `GetTriangleStrip' and no extension method `GetTriangleStrip' of type `UnityEngine.Mesh' could be found (are you missing a using directive or an assembly reference?)
4. ---------
5. Assets/Standard Assets/Scripts/Utility Scripts/MeshCombineUtility.cs(200,30): error CS1061: Type `UnityEngine.Mesh' does not contain a definition for `SetTriangleStrip' and no extension method `SetTriangleStrip' of type `UnityEngine.Mesh' could be found (are you missing a using directive or an assembly reference?)

 

I've gone over the script MeshCombineUtility and I see the variables 'GetTriangleStrip', 'GetTriangles' and 'SetTriangleStrip' but what is it your asking me to do? replace 'GetTriangleStrip' with 'GetTriangles'?

I have never seen or touched this script before so Im a bit hesitant because I dont want to break anything. What specifically do I have to do please?

 

Aye that.
Tough to break it more than "Broken"

 

I tried edded those 3 lines to

int curStripCount = 0;//combine.mesh.GetTriangleStrip(combine.subMeshIndex).Length;

int[] inputstrip = {0,0};//combine.mesh.GetTriangleStrip(combine.subMeshIndex);

;// do nothing //mesh.SetTriangleStrip(strip, 0);

but that just created nearly 600 errors and a lot of other scripts are failing. whats the right way to fix this?

 

I managed to fix the problem following instructions online, i.e. I literally had to change GetTriangleStrip to GetTriangle and one or two other things.

One of those other things involved me going into the 'CameraMotionBlurEditor' and commenting out lines 91, 92 and 93. So everything works to my knowledge but I just want to make sure I havent taken out anything essential out or if this is going to bite me in the but later on.

 

change GetTriangleStrip to GetTriangles