Post your Portal 2 Authoring Tool Bugs
I still have no idea where it is trying to point to. its pointing to props and lights and sounds and all sorts of things that are all over my map. what can I do?
If you want to post your vmf i'll have a look.
I'm a noob at this kinda stuff. How do I do that?
When you post a reply, click on the "upload attachment" link below the reply box, browse to the file on your computer, then click "add the file".
Here's the vmf for my map
It was just a standard leak due to a hole in your brushwork above your light props. You made the majority of the ceiling in this area 2 units thick, but part of it was only 1 unit thick, which caused the leak. It's best to make brushes thicker than a couple of units, like 16 units minimum, and keep to the grid. That makes stuff like this easier to spot.
When you have leaks like this in future, just follow the point file away from the starting entity, and look closely at the area where the line exits your brushwork into the void outside.
Here is your fixed map (in a zip file for quicker upload):
I haven't tested it ingame, but it compiles fine now. The compiler does show an entity outside your map (one of the glass covers from a light prop), so you may want to look into it and adjust it's position, but it isn't affecting compiling so it just needs tweaking.
lol. Ill gladly take your advice. thanks alot btw. 
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Nodraw textures should be on every brush face that you cannot see as it drastically improves performance. It also increases visibility when you create your level as you can toggle nodraw texture on and off (i.e. make it invisible) in the hammer editor.
sometimes Hammer shuts down randomly, most of the time I can edit for hours but sometimes it crashes twice a hour or something, when reload they ask for load autosave but that leads to nothing I geuss, I can't see any grid or something and nothing in the 3D view, any solution on this, I thought it had something to do with my RAM limit but hammer only uses half of it so yeah. I thought running portal 2 and hammer together but also when no portal 2 is on it crashes...SOLUTIONS???