Hammer Error "File not found"

[Geek.Neff]

** Executing...
** Command: "c:\games\steam\steamapps\webwonk\sourcesdk\bin\orangebox\bin\vbsp.exe"
** Parameters: -game "c:\games\steam\steamapps\webwonk\day of defeat source\dod" "C:\Games\Steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02"

Valve Software - vbsp.exe (May 19 2009)
2 threads
materialPath: c:\games\steam\steamapps\webwonk\day of defeat source\dod\materials
Loading C:\Games\Steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02.vmf
Entity 2739: func_areaportal can only be a single brush

** Executing...
** Command: "c:\games\steam\steamapps\webwonk\sourcesdk\bin\orangebox\bin\vvis.exe"
** Parameters: -game "c:\games\steam\steamapps\webwonk\day of defeat source\dod" -fast "C:\Games\Steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02"

Valve Software - vvis.exe (May 19 2009)
fastvis = true
2 threads
reading c:\games\steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02.bsp
Error opening c:\games\steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02.bsp

** Executing...
** Command: "c:\games\steam\steamapps\webwonk\sourcesdk\bin\orangebox\bin\vrad.exe"
** Parameters:  -game "c:\games\steam\steamapps\webwonk\day of defeat source\dod" -noextra "C:\Games\Steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02"

Valve Software - vrad.exe SSE (May 19 2009)

      Valve Radiosity Simulator     
2 threads
[Reading texlights from 'lights.rad']
[39 texlights parsed from 'lights.rad']

Loading c:\games\steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02.bsp
Error opening c:\games\steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02.bsp

** Executing...
** Command: Copy File
** Parameters: "C:\Games\Steam\steamapps\webwonk\sourcesdk_content\dod\mapsrc\rp_lisieux_test02.bsp" "c:\games\steam\steamapps\webwonk\day of defeat source\dod\maps\rp_lisieux_test02.bsp"

The command failed. Windows reported the error:
  "The system cannot find the file specified."

I have had this problem before. I either forgot how to fix it, or never actually knew. If anyone could point me to a solution, or give one, that'd be nice.

[flippy645]

Entity 2739 func_areaportal can only be a single brush
it can only be one brush try making 2 areaportals

[Geek.Neff]

Thanks. Guess I missed it