Well lets get to it.
Error 4 error MSB3073: The command "if exist "C:\Program Files (x86)\Steam\SteamApps\sourcemods\ufo\bin\." goto ValveStart
mkdir "C:\Program Files (x86)\Steam\SteamApps\sourcemods\ufo\bin\."
:ValveStart
copy "C:\Alien Swarm Mod\src\game\server\Release_swarm\"Server Swarm.dll "C:\Program Files (x86)\Steam\SteamApps\sourcemods\ufo\bin\.\Server Swarm.dll"
if ERRORLEVEL 1 goto BuildEventFailed
if exist "C:\Alien Swarm Mod\src\game\server\Release_swarm\"Server Swarm.map copy "C:\Alien Swarm Mod\src\game\server\Release_swarm\"Server Swarm.map "C:\Program Files (x86)\Steam\SteamApps\sourcemods\ufo\bin\.\Server Swarm.map"
copy "C:\Alien Swarm Mod\src\game\server\Release_swarm\"Server Swarm.pdb "C:\Program Files (x86)\Steam\SteamApps\sourcemods\ufo\bin\.\Server Swarm.pdb"
if ERRORLEVEL 1 goto BuildEventFailed
goto BuildEventOK
:BuildEventFailed
echo *** ERROR! PostBuildStep FAILED for Server Swarm! EXE or DLL is probably running. ***
del /q "C:\Alien Swarm Mod\src\game\server\Release_swarm\"Server Swarm.dll
exit 1
:BuildEventOK
:VCEnd" exited with code 1. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.CppCommon.targets 113 6 Server Swarm
Error 7 error MSB3073: The command "if exist "C:\Program Files (x86)\Steam\SteamApps\sourcemods\alienswarmod\bin\." goto ValveStart
mkdir "C:\Program Files (x86)\Steam\SteamApps\sourcemods\alienswarmod\bin\."
:ValveStart
copy "C:\Alien Swarm Mod\src\game\client\Release_swarm\"Client Swarm.dll "C:\Program Files (x86)\Steam\SteamApps\sourcemods\alienswarmod\bin\.\Client Swarm.dll"
if ERRORLEVEL 1 goto BuildEventFailed
if exist "C:\Alien Swarm Mod\src\game\client\Release_swarm\"Client Swarm.map copy "C:\Alien Swarm Mod\src\game\client\Release_swarm\"Client Swarm.map "C:\Program Files (x86)\Steam\SteamApps\sourcemods\alienswarmod\bin\.\Client Swarm.map"
copy "C:\Alien Swarm Mod\src\game\client\Release_swarm\"Client Swarm.pdb "C:\Program Files (x86)\Steam\SteamApps\sourcemods\alienswarmod\bin\.\Client Swarm.pdb"
if ERRORLEVEL 1 goto BuildEventFailed
goto BuildEventOK
:BuildEventFailed
echo *** ERROR! PostBuildStep FAILED for Client Swarm! EXE or DLL is probably running. ***
del /q "C:\Alien Swarm Mod\src\game\client\Release_swarm\"Client Swarm.dll
exit 1
:BuildEventOK
:VCEnd" exited with code 1. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.CppCommon.targets 113 6 Client Swarm
2 errors, don't know what is causing them. :S