coroutine->IsInList()

the error does not refer to nothing script. only happens,

But you probably added some code before this error showed up. Did that code contain any coroutines?

yes im added a lot of code.. this error only occurred sometimes and never at the same event..

So we need to see the code snippet for the coroutine part.

ok, i will try to find the script that is failing. And post here. thx for the help :)