New Problem compiling: OVERLAY_BSP_FACE_COUNT

Does anyone have any idea on what causes this error? It happened (I thought) after I added several overlays, but deleting the overlays still gives the error when compiling.

Compile log:

** Executing...
** Command: "c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk\bin\vbsp.exe"
** Parameters: -game "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2" "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f"

Valve Software - vbsp.exe (Dec 15 2004)
2 threads
materialPath: c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2\materials
Loading C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.vmf
fixing up env_cubemap materials on brush sides...
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
**** leaked ****
Entity info_node (928.00 -416.00 1.00) leaked!
Processing areas...done (0)
Building Faces...done (0)
Chop Details...done (0)
Find Visible Detail Sides...
Merged 20 detail faces...done (0)
Merging details...done (0)
FixTjuncs...
PruneNodes...
WriteBSP...
done (0)
Creating default cubemaps for env_cubemap using skybox sky_wasteland02...
Run buildcubemaps in the engine to get the correct cube maps.
Finding displacement neighbors...
Finding lightmap sample positions...
Displacement Alpha : 0...1...2...3...4...5...6...7...8...9...10
Face List Count >= OVERLAY_BSP_FACE_COUNT

** Executing...
** Command: "c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk\bin\vvis.exe"
** Parameters: -game "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2" "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f"

Valve Software - vvis.exe (Dec 15 2004)
2 threads
reading c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp
Error opening c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp

** Executing...
** Command: "c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk\bin\vrad.exe"
** Parameters: -game "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2" "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f"

Valve Software - vrad.exe (Dec 15 2004)
----- Radiosity Simulator ----
2 threads
[Reading texlights from 'lights.rad']
[45 texlights parsed from 'lights.rad']

Loading c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp
Error opening c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp

** Executing...
** Command: Copy File
** Parameters: "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp" "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2\maps\jtp_map_01f.bsp"

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

Whoops, that compile has a Leak as well, corrected that, but still getting the original problem.

New compile log:

** Executing...
** Command: "c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk\bin\vbsp.exe"
** Parameters: -game "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2" "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f"

Valve Software - vbsp.exe (Dec 15 2004)
2 threads
materialPath: c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2\materials
Loading C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.vmf
fixing up env_cubemap materials on brush sides...
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
Processing areas...done (0)
Building Faces...done (0)
Chop Details...done (0)
Find Visible Detail Sides...
Merged 20 detail faces...done (0)
Merging details...done (0)
FixTjuncs...
PruneNodes...
WriteBSP...
done (0)
writing C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.prt...done (0)
Creating default cubemaps for env_cubemap using skybox sky_wasteland02...
Run buildcubemaps in the engine to get the correct cube maps.
Finding displacement neighbors...
Finding lightmap sample positions...
Displacement Alpha : 0...1...2...3...4...5...6...7...8...9...10
Face List Count >= OVERLAY_BSP_FACE_COUNT

** Executing...
** Command: "c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk\bin\vvis.exe"
** Parameters: -game "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2" "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f"

Valve Software - vvis.exe (Dec 15 2004)
2 threads
reading c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp
Error opening c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp

** Executing...
** Command: "c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk\bin\vrad.exe"
** Parameters: -game "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2" "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f"

Valve Software - vrad.exe (Dec 15 2004)
----- Radiosity Simulator ----
2 threads
[Reading texlights from 'lights.rad']
[45 texlights parsed from 'lights.rad']

Loading c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp
Error opening c:\program files\valve\steam\steamapps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp

** Executing...
** Command: Copy File
** Parameters: "C:\Program Files\Valve\Steam\SteamApps\troy_pichelman\sourcesdk_content\hl2\mapsrc\jtp_map_01f.bsp" "c:\program files\valve\steam\steamapps\troy_pichelman\half-life 2\hl2\maps\jtp_map_01f.bsp"

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

When I got this error, it was because I had assigned my overlays to too
many surfaces. Check the ones you made recently, there shouldn't
be any reason to have more than 6 or so.

More than 6?! the single player had much more than 6, what do you mean exactly?

You can assign a single overlay to multiple surfaces, and if you assign
them to too many, you get the OVERLAY_BSP_FACE_COUNT error.

6 was just a random number, I think I got that error at about a dozen.

Found out what I did. I had a large brush with several overlays that had worked fine, then I resized it larger, then this error started. Split the brush into two and the error goes away.