Generated serialization assembly is not signed:

I have gone into the properties of my project ad signed the assembly, but when i try and build the project i get the following error on the Post build event

call "$(SolutionDir)SqltoCRMTest\BatchFiles\NoSign.bat"

NoSign.bat

cd\
cd C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin
sgen.exe /a:"XXXXXXXXXX\SqltoCRMTest.dll" /p /force

VSError

Generated serialization assembly is not signed: SqltoCRMTest.XmlSerializers, Version=1.0.4926.29826, Culture=neutral, PublicKeyToken=null. Please specify strong name key file via /compiler:/keyfile:<file> switch. xxxxxxxx\EXEC SqltoCRMTest

Dont ask me .. i dont know