diff --git a/Builder/IISMainHandler/build.txt b/Builder/IISMainHandler/build.txt
index 97f6d7e..c32e6ac 100644
--- a/Builder/IISMainHandler/build.txt
+++ b/Builder/IISMainHandler/build.txt
@@ -1 +1 @@
-2017
\ No newline at end of file
+2019
\ No newline at end of file
diff --git a/FLocal.Patcher.Common/FLocal.Patcher.Common.csproj b/FLocal.Patcher.Common/FLocal.Patcher.Common.csproj
index a29b38d..dbc773f 100644
--- a/FLocal.Patcher.Common/FLocal.Patcher.Common.csproj
+++ b/FLocal.Patcher.Common/FLocal.Patcher.Common.csproj
@@ -65,6 +65,9 @@
       <Name>Web.Core</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Resources\Patch_00000_cleaninstall.xml" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/FLocal.Patcher.Common/Resources/Patch_00000_cleaninstall.xml b/FLocal.Patcher.Common/Resources/Patch_00000_cleaninstall.xml
new file mode 100644
index 0000000..9614d12
--- /dev/null
+++ b/FLocal.Patcher.Common/Resources/Patch_00000_cleaninstall.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<patch xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="..\..\Patcher\Resources\IPatch.xsd">
+	<version>
+		<number>0</number>
+		<author>cleaninstall</author>
+	</version>
+	<strictCommandSet>
+	</strictCommandSet>
+</patch>
\ No newline at end of file
diff --git a/Patcher/Data/Patch/AtomicPatch.cs b/Patcher/Data/Patch/AtomicPatch.cs
index add6f31..1bd6a93 100644
--- a/Patcher/Data/Patch/AtomicPatch.cs
+++ b/Patcher/Data/Patch/AtomicPatch.cs
@@ -51,7 +51,6 @@ namespace Patcher.Data.Patch
 				}
 				rollbackInfos.Add(new XElement("command", new XAttribute("num", i), commandRollbackInfoContent));
 			}
-			throw new ApplicationException("safety switch");
 			return new XDocument(new XElement("rollbackInfo", rollbackInfos.ToArray()));
 		}