Hammer Compile error

When I Try To Compile A Map I’ve Been Working On It Gives Me This Message

** Executing…
** Command: “c:\program files\steam\steamapps*steamusername*\sourcesdk\bin\ep1\bin\vbsp.exe”
** Parameters: -game “c:\program files\steam\steamapps*steamusername*\half-life 2\hl2” “C:\Program Files\Steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract”

Valve Software - vbsp.exe (Dec 11 2006)
2 threads
materialPath: c:\program files\steam\steamapps*steamusername*\half-life 2\hl2\materials
Loading C:\Program Files\Steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract.vmf
Brush 1090, Side 1: mirrored plane
Brush 1090: FloatPlane: bad normal
Side 2
Texture: WOOD/WOODFLOOR002A

** Executing…
** Command: “c:\program files\steam\steamapps*steamusername*\sourcesdk\bin\ep1\bin\vvis.exe”
** Parameters: -game “c:\program files\steam\steamapps*steamusername*\half-life 2\hl2” “C:\Program Files\Steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract”

Valve Software - vvis.exe (Nov 8 2007)
2 threads
reading c:\program files\steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract.bsp
Error opening c:\program files\steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract.bsp

** Executing…
** Command: “c:\program files\steam\steamapps*steamusername*\sourcesdk\bin\ep1\bin\vrad.exe”
** Parameters: -game “c:\program files\steam\steamapps*steamusername*\half-life 2\hl2” “C:\Program Files\Steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract”

Valve Software - vrad.exe SSE (Nov 8 2007)
----- Radiosity Simulator ----
2 threads
[Reading texlights from ‘lights.rad’]
[45 texlights parsed from ‘lights.rad’]

Loading c:\program files\steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract.bsp
Error opening c:\program files\steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract.bsp

** Executing…
** Command: Copy File
** Parameters: “C:\Program Files\Steam\steamapps*steamusername*\sourcesdk_content\portal\mapsrc\abstract.bsp” “c:\program files\steam\steamapps*steamusername*\half-life 2\hl2\maps\abstract.bsp”

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

And Then I get a message asking me if i want to continue
Please help I’ve been working on this map a long time

Use code tags.

Looks like an invalid brush to me. Try going to View > Go to brush and plug in 1090 and delete/remake the brush.