diff --git a/.gitignore b/.gitignore
index 2577fafa1..7ba91052e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,4 @@ binfiles.wxs
 .idea/
 .vs/
 
+Installer/debian/*.buildinfo
diff --git a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj
index c84af5e6a..662be0619 100644
--- a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj
+++ b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Duplicati.GUI.TrayIcon.csproj
@@ -69,8 +69,8 @@
     <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="CoCoL, Version=1.5.0.19417, Culture=neutral, PublicKeyToken=0983de3c914beeaa, processorArchitecture=MSIL">
-      <HintPath>..\..\..\packages\CoCoL.1.6.1\lib\net45\CoCoL.dll</HintPath>
+    <Reference Include="CoCoL, Version=1.6.2.0, Culture=neutral, PublicKeyToken=0983de3c914beeaa, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\CoCoL.1.6.2\lib\net45\CoCoL.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\Newtonsoft.Json.12.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
diff --git a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Properties/AssemblyInfo.cs b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Properties/AssemblyInfo.cs
index 9e1a1180a..a1360e670 100644
--- a/Duplicati/GUI/Duplicati.GUI.TrayIcon/Properties/AssemblyInfo.cs
+++ b/Duplicati/GUI/Duplicati.GUI.TrayIcon/Properties/AssemblyInfo.cs
@@ -10,7 +10,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Duplicati Team")]
 [assembly: AssemblyProduct("Duplicati.GUI.TrayIcon")]
-[assembly: AssemblyCopyright("LGPL, Copyright © Duplicati Team 2015")]
+[assembly: AssemblyCopyright("LGPL, Copyright © Duplicati Team 2019")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
diff --git a/Duplicati/GUI/Duplicati.GUI.TrayIcon/packages.config b/Duplicati/GUI/Duplicati.GUI.TrayIcon/packages.config
index b9e1d2970..2150f07f7 100644
--- a/Duplicati/GUI/Duplicati.GUI.TrayIcon/packages.config
+++ b/Duplicati/GUI/Duplicati.GUI.TrayIcon/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="CoCoL" version="1.6.1" targetFramework="net462" />
+  <package id="CoCoL" version="1.6.2" targetFramework="net462" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net462" />
 </packages>
\ No newline at end of file
diff --git a/Duplicati/Library/Main/Duplicati.Library.Main.csproj b/Duplicati/Library/Main/Duplicati.Library.Main.csproj
index 3daa9b088..4b3762ac8 100644
--- a/Duplicati/Library/Main/Duplicati.Library.Main.csproj
+++ b/Duplicati/Library/Main/Duplicati.Library.Main.csproj
@@ -36,8 +36,8 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="CoCoL, Version=1.5.0.19417, Culture=neutral, PublicKeyToken=0983de3c914beeaa, processorArchitecture=MSIL">
-      <HintPath>..\..\..\packages\CoCoL.1.6.1\lib\net45\CoCoL.dll</HintPath>
+    <Reference Include="CoCoL, Version=1.6.2.0, Culture=neutral, PublicKeyToken=0983de3c914beeaa, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\CoCoL.1.6.2\lib\net45\CoCoL.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\Newtonsoft.Json.12.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
diff --git a/Duplicati/Library/Main/packages.config b/Duplicati/Library/Main/packages.config
index b9e1d2970..2150f07f7 100644
--- a/Duplicati/Library/Main/packages.config
+++ b/Duplicati/Library/Main/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="CoCoL" version="1.6.1" targetFramework="net462" />
+  <package id="CoCoL" version="1.6.2" targetFramework="net462" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net462" />
 </packages>
\ No newline at end of file
diff --git a/Duplicati/Library/UsageReporter/Duplicati.Library.UsageReporter.csproj b/Duplicati/Library/UsageReporter/Duplicati.Library.UsageReporter.csproj
index 416734f7d..d304c5adf 100644
--- a/Duplicati/Library/UsageReporter/Duplicati.Library.UsageReporter.csproj
+++ b/Duplicati/Library/UsageReporter/Duplicati.Library.UsageReporter.csproj
@@ -31,8 +31,8 @@
     <ConsolePause>false</ConsolePause>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="CoCoL, Version=1.5.0.19417, Culture=neutral, PublicKeyToken=0983de3c914beeaa, processorArchitecture=MSIL">
-      <HintPath>..\..\..\packages\CoCoL.1.6.1\lib\net45\CoCoL.dll</HintPath>
+    <Reference Include="CoCoL, Version=1.6.2.0, Culture=neutral, PublicKeyToken=0983de3c914beeaa, processorArchitecture=MSIL">
+      <HintPath>..\..\..\packages\CoCoL.1.6.2\lib\net45\CoCoL.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\Newtonsoft.Json.12.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
diff --git a/Duplicati/Library/UsageReporter/packages.config b/Duplicati/Library/UsageReporter/packages.config
index b9e1d2970..2150f07f7 100644
--- a/Duplicati/Library/UsageReporter/packages.config
+++ b/Duplicati/Library/UsageReporter/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="CoCoL" version="1.6.1" targetFramework="net462" />
+  <package id="CoCoL" version="1.6.2" targetFramework="net462" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net462" />
 </packages>
\ No newline at end of file
diff --git a/Installer/Windows/Duplicati.wxs b/Installer/Windows/Duplicati.wxs
index d305ee47a..06f68b91d 100644
--- a/Installer/Windows/Duplicati.wxs
+++ b/Installer/Windows/Duplicati.wxs
@@ -84,13 +84,13 @@
 
     <!-- Remove old versions -->
     <InstallExecuteSequence>
-      <RemoveExistingProducts After="InstallFinalize" />
+      <RemoveExistingProducts After="InstallInitialize" />
     </InstallExecuteSequence>
 
     <Property Id="PREVIOUSVERSIONSINSTALLED" Secure="yes" />
     <Upgrade Id="$(var.UpgradeCode)">
       <UpgradeVersion Minimum="2.0.0.0" Property="PREVIOUSVERSIONSINSTALLED"  Maximum="99.0.0.0" IncludeMinimum="yes" IncludeMaximum="no" />
     </Upgrade>
-    
+
   </Product>
 </Wix>
diff --git a/Updates/build_version.txt b/Updates/build_version.txt
index f64f5d8d8..9902f1784 100644
--- a/Updates/build_version.txt
+++ b/Updates/build_version.txt
@@ -1 +1 @@
-27
+28
diff --git a/changelog.txt b/changelog.txt
index ea133a4bc..167ecc513 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,7 @@
+2019-09-05 - 2.0.4.28_canary_2019-09-05
+==========
+* Updated CoCoL and WiX to fix rollback and upgrade errors, thanks @BlueBlock
+
 2019-09-03 - 2.0.4.27_canary_2019-09-03
 ==========
 * Fixed issues with the MSI packages not upgrading correctly, thanks @BlueBlock