I'm just about to finish my first hammer map which I startet in PTI and then edited with hammer.
My Problem now is now, that the lighting seems to be a fulllbright one... but using the console with "mat_fullbright 0" doesn't change anything.
Also there seems to be a grafic bug (or just a fault of mine) at the last entry room: until I'm at the half of that PTI made pre-room the last door before my chamber appears just as white. When I'm going closer, then the textures appear. It's all in a "func_instance" called "doorentry0".
All in all, the map has 3 big boxes - which should be in all maps made by PTI. Just in one of them, there is the main part of my map. The Box itself is also called "doorentry0". A part of my map is growing outside of this box, but this also was made by PTI...
In the map I changed some textures, added some decals and overlays, added some entities.
I did not change any light settings...
Have you any idea?
I already built the map again from a new PTI-built .vmf because I wanted to be shure it's not my fault- making some changes without remembering them... so that should not be the case.
my run map console gives me also the following error - and a lot of similar ones:
"FindPortalSide: Couldn't find a good match for which brush to assign to a portal
near (1536.0 4096.0 1536.0)
Leaf 0 contents:
Leaf 1 contents: CONTENTS_SOLID
viscontents (node 0 contents ^ node 1 contents): CONTENTS_SOLID
This means that none of the brushes in leaf 0 or 1 that touches the portal has C
ONTENTS_SOLID
Check for a huge brush enclosing the coordinates above that has contents CONTENT
S_SOLID
Candidate brush IDs:"
the Coordinates of all errors seem to be a part of this doorentry0 big-box anywhere outside in the black nothing...
I really do not know whats going on there. I also didn't find anything quite similar per search...
I would apreciate if you could give me some clues... 
Greets,
fou-rieux
...