Could you provide a little more details please?

Like:
What are you using as a base? Meaning - what are you using to build up your insim app. from?
Exactly where did you copy the code from?

How have you made sure the new code is compatible with the current source?

I think that should be enough for now.

Okay, but you misunderstood my initial question. Let me ask in another way: Where did you download the source, you are copying to?