the [delay] object at the bottom of [drumming-aux] is not initially set with a delay time. Would be a good idea just to set it as [delay 100] or something, so it doesn't immediately go off into a stack overflow loop.
also,
between the
- object and the right inlet of the [delay] object, you probably should put something like [max 10], to ensure that the delay time never goes too low as to form a stack overflow.
that's the first possible error i can see, but there may be others.
what you need to do is to logically debug your patch. Open a new copy of the patch, and remove some part (for example, that [drumming-aux] abstraction. If your stack overflow situation continues, then you still have some problem.
Keep doing that, removing parts, until suddenly the problem disappears. Whichever part you removed just before that is likely the cause of your problem, and you can focus on it to see where the issue is.