diff --git a/.gitignore b/.gitignore
index 115e00b..9649dfa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,6 @@
 /XstPortableExport/Properties/launchSettings.json
 /XstReader.Base/bin
 /XstReader.Base/obj
+/docs/Command line tests.txt
+/XstPortableExport/bin/Release/netcoreapp2.1
+/XstPortableExport/Properties/PublishProfiles
diff --git a/README.md b/README.md
index e5d6cd8..c183ea8 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,10 @@ Where:
    `<Outlook file name>`  
       The full name of the .pst or .ost file from which to export
 
+To run the portable version, open a command line and run:
+
+dotnet XstPortableExport.dll `<options as above>`
+
 ## Installation
 
 To install a binary:
diff --git a/XstPortableExport/XstPortableExport.csproj b/XstPortableExport/XstPortableExport.csproj
index 48bf665..c99daf9 100644
--- a/XstPortableExport/XstPortableExport.csproj
+++ b/XstPortableExport/XstPortableExport.csproj
@@ -12,6 +12,10 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
   
  <ItemGroup>
     <Compile Include="..\XstExport\Options.cs" />