diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.CodeDom.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.CodeDom.dll
index d130aa89a0..99cf107502 100755
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Compiler.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Compiler.dll
index bd279d9575..deb4ed5f78 100755
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Extensions.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Extensions.dll
index 707a733a7d..9392c4e8ca 100755
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Interpreter.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Interpreter.dll
index 3351c5b24d..1148616794 100755
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Parser.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Parser.dll
index a217997cb7..70700ce7cf 100755
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.PatternMatching.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.PatternMatching.dll
index 29de39f0b2..4ae1cc34ed 100644
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Useful.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.Useful.dll
index dd41f3af99..93365cf26f 100755
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diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.dll
index 2c9b185236..79f98b8bbf 100755
Binary files a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.dll and b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Lang.dll differ
diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.Tasks.dll b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.Tasks.dll
index 6b8de5befd..e352a7f47f 100755
Binary files a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.Tasks.dll and b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.Tasks.dll differ
diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.targets b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.targets
index dfdc963c04..64ac71b220 100644
--- a/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.targets
+++ b/src/AddIns/BackendBindings/Boo/RequiredLibraries/Boo.Microsoft.Build.targets
@@ -218,6 +218,7 @@
 	>
 		
 		<Booc
+			AllowUnsafeBlocks="$(AllowUnsafeBlocks)"
 			CheckForOverflowUnderflow="$(CheckForOverflowUnderflow)"
 			Culture="$(AssemblyCulture)"
 			DefineSymbols="$(DefineConstants)"
@@ -230,8 +231,10 @@
 			KeyFile="$(AssemblyOriginatorKeyFile)"
 			NoConfig="$(NoConfig)"
 			NoStandardLib="$(NoStdLib)"
+			OptionalWarnings="$(OptionalWarnings)"
 			OutputAssembly="@(IntermediateAssembly)"
 			Pipeline="$(Pipeline)"
+			Platform="$(PlatformTarget)"
 			References="@(ReferencePath)"
 			Resources="@(ManifestResourceWithNoCulture);
 			           @(ManifestNonResxWithNoCultureOnDisk);
@@ -250,13 +253,13 @@
 		/>
 		
 		<Copy
-			Condition=" '$(BoocToolPath)' == '' "
+			Condition=" ('$(BoocToolPath)' == '') and ('$(CopyBooLangToOutput)' != 'false') "
 			SkipUnchangedFiles="true"
 			SourceFiles="$(BooBinPath)\Boo.Lang.dll"
 			DestinationFolder="$(OutputPath)"/>
 		
 		<Copy
-			Condition=" '$(BoocToolPath)' != '' "
+			Condition=" ('$(BoocToolPath)' != '') and ('$(CopyBooLangToOutput)' != 'false') "
 			SkipUnchangedFiles="true"
 			SourceFiles="$(BoocToolPath)\Boo.Lang.dll"
 			DestinationFolder="$(OutputPath)"/>
diff --git a/src/AddIns/BackendBindings/Boo/RequiredLibraries/booc.exe b/src/AddIns/BackendBindings/Boo/RequiredLibraries/booc.exe
index f3c11c32e2..8f425d7ce8 100755
Binary files a/src/AddIns/BackendBindings/Boo/RequiredLibraries/booc.exe and b/src/AddIns/BackendBindings/Boo/RequiredLibraries/booc.exe differ