invisible walls

My walls show up in the editor, but when i get to the game none of them show, its just black, but you can walk on it and its only one part of the map. I'm workin on a tunnel but the tunnel walls floors and ceiling wont show up. I get this message in the compiler, but i don't know how ot do what its telling me to or what its telling me to do.

Compiler reads: FindPortalSide: Couldn't find a good match for which brush to assign to a portal near (-1536.0, 1024.0, 310.0)
Leaf 0 contents: CONTENTS_SOLID
Leaf 1 contents:
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 CONTENTS_SOLID
Check for a huge brush enclosing the coordinates above that has contents CONTENTS_SOLID
Candidate brush IDs:

i suggest u refresh the source content in the source SDK menu...and try configuring the game configuration again...by clickin on tools then options...hope this helps...

I got that once and it turned out that i had a solid that was solid on one side but the other was kinda invisible (hard to describe)

I just rotated it so the invisible bit wasnt seen and it worked :smile:

actually it never happend to me...hope that helps him anyway...

i do have an invisible side on some of them what exactly did u do to fix it cuz i cant see my invisible side its outside the visible side is inside.

Edit: You were right my walls were invisible on one side so i replaced them with real cubes and now it works thank you.