windows build area in forums

hi. i have a problem with my windows 64 build but i couldnt see an obvious place to post on these forums…no windows specific area?

so the problem is that in the editor, and play in new window or play in editor, my level looks ok, but on a build i a have noticed a few actors missing. i have no idea why. they are the same as many other actors in my scene and the others all show up fine.

where do i begin to solve this?