I really hoped I would not have had to make this thread, but alas I'm running out of ideas. I've spent quite some time on a map, its basically a huge room in which a few testchambers float. I now have a leak according to the compiler; the last thing I did before the leak happened was copying a few items from an other map into mine (an exit door, stairs and a whole exit elevator).

I think that whilst pasting stuff into my map an item might have found its way outside of my map area.
The compiler seems to randomly pick entities in my map and tells me they are leaking.

What have I done to get to the bottom of this? I copied my map and deleted everything I added in in this mornings session, no effect, leak is still there.
I loaded in the point files, these are not consistent at all, and lead to nothing obvious.

An other strange thing that might be related to this; I am seeing this big red circle in my 2d screens, no idea what it is for, never seen it, it follows the camera in the 3d screen...

I know I can go back to my previous backup, not much work is lost, but I would like to use this as a bit of a learning experience, so I know how to find the leak myself next time... any suggestions anyone? (I used https://developer.valvesoftware.com/wiki/Leaks#Checking_for_leaks_the_fast_way as a reference...

From what you are saying, it seems you've got radius culling turned on. It's a button in the toolbar that looks like this . While turned on you will only compile what's inside a certain radius from your current 3d view position (it can be seen as the red circle in the 2d views).

soptipp1 wrote:
From what you are saying, it seems you've got radius culling turned on. It's a button in the toolbar that looks like this . While turned on you will only compile what's inside a certain radius from your current 3d view position (it can be seen as the red circle in the 2d views).

Soptipp1, can i give you a big kiss (no tongues I promise), solved it in one go, whohooo!
I will leave out the sarcastic comments about why the **** that button is there for me to press in the first place... I mean, "please make it so that I can't compile my map and that I get the weirdest compile errors that I will never be able to debug" is a bit of an unfair option to throw in the menu bar... Ooh well, I suppose it could be handy if you just want to compile a small aspect of your map fast.. but dang...