My First Crash =)

Hello all! First, I have to say I'm wicked excited about having Constructor at my disposal as a tool. Secondly, an artist I am not. I've never used a .dif/.map creation tool before, so I'm kind of starting at square one.

Here's my prob:

I managed to create a room out of a box, and then cut out a wall and the ceiling so that it resembled a stage you might see at a play. That exported and loaded into TGE just fine for me. I then went on to something a little more complex. I decided to make a factory, completely closed in with one portal as entry/exit.

When I try to export, I get a fatal error for map2dif_plus.exe (asking if I want to debug or cancel). Here's the log code:

Converting scene to map ...
Map: C:/DOCUME~1/perrym/LOCALS~1/Temp/building.map
Copying textures to C:/Torque/Constructor/Exported/TGE ...
   wall6_fill.png
   Black.png
   roof5.png
Could not find texture [none]
   wall6_side.png
   wall5_front.png
   wall6_front.png
Executing map2dif_plus -o C:/Torque/Constructor/Exported/TGE -t C:/Torque/Constructor/Exported/TGE C:/DOCUME~1/perrym/LOCALS~1/Temp/building.map

map2dif - Torque .MAP file converter
  Copyright (C) GarageGames.com, Inc.
  Program version: 1.0r
  Programmers: John Folliard, Dave Moore, and Matthew Fairfax
  Built: Jul 24 2005 at 23:55:54


Loading C:/DOCUME~1/perrym/LOCALS~1/Temp/building.map
Initial texture search path is set to "C:/Torque/Constructor/Exported/TGE/"

Successfully opened map file: C:/DOCUME~1/perrym/LOCALS~1/Temp/building.map
  Parsing mapfile...
      Unable to load texture [none]
   done.
  Creating BSP...

I'm wondering if I didn't set up the portal correctly, if I skipped some important step, or if just completely FUBARed the brushes completely.

Any help, or links to help, would be greatly appreciated!

[EDIT]
Fixed. I just had to browse the forums for Quark and portal threads/tutorials to learn how to place portals correctly. BSP and zoning are all working just fine now.
[/EDIT]