diff --git a/build/UmbracoVersion.txt b/build/UmbracoVersion.txt
index b035e059fb..df444cdd7b 100644
--- a/build/UmbracoVersion.txt
+++ b/build/UmbracoVersion.txt
@@ -1,2 +1,2 @@
 # Usage: on line 2 put the release version, on line 3 put the version comment (example: beta)
-7.5.1
\ No newline at end of file
+7.5.3
\ No newline at end of file
diff --git a/src/SolutionInfo.cs b/src/SolutionInfo.cs
index 4c746b1009..a0a32912c9 100644
--- a/src/SolutionInfo.cs
+++ b/src/SolutionInfo.cs
@@ -11,5 +11,5 @@ using System.Resources;
 
 [assembly: AssemblyVersion("1.0.*")]
 
-[assembly: AssemblyFileVersion("7.5.1")]
-[assembly: AssemblyInformationalVersion("7.5.1")]
\ No newline at end of file
+[assembly: AssemblyFileVersion("7.5.3")]
+[assembly: AssemblyInformationalVersion("7.5.3")]
\ No newline at end of file
diff --git a/src/Umbraco.Core/Configuration/UmbracoVersion.cs b/src/Umbraco.Core/Configuration/UmbracoVersion.cs
index 6b84ca7ea9..72e7187960 100644
--- a/src/Umbraco.Core/Configuration/UmbracoVersion.cs
+++ b/src/Umbraco.Core/Configuration/UmbracoVersion.cs
@@ -6,7 +6,7 @@ namespace Umbraco.Core.Configuration
 {
     public class UmbracoVersion
     {
-        private static readonly Version Version = new Version("7.5.1");
+        private static readonly Version Version = new Version("7.5.3");
 
         /// <summary>
         /// Gets the current version of Umbraco.
diff --git a/src/Umbraco.Core/Persistence/Repositories/MediaRepository.cs b/src/Umbraco.Core/Persistence/Repositories/MediaRepository.cs
index 97981849bc..8c9bec71d4 100644
--- a/src/Umbraco.Core/Persistence/Repositories/MediaRepository.cs
+++ b/src/Umbraco.Core/Persistence/Repositories/MediaRepository.cs
@@ -413,6 +413,8 @@ namespace Umbraco.Core.Persistence.Repositories
             {
                 foreach (var property in entity.Properties)
                 {
+                    if (keyDictionary.ContainsKey(property.PropertyTypeId) == false) continue;
+
                     property.Id = keyDictionary[property.PropertyTypeId];
                 }
             }
diff --git a/src/Umbraco.Core/Persistence/Repositories/MemberRepository.cs b/src/Umbraco.Core/Persistence/Repositories/MemberRepository.cs
index f14d66691b..0f0e797f17 100644
--- a/src/Umbraco.Core/Persistence/Repositories/MemberRepository.cs
+++ b/src/Umbraco.Core/Persistence/Repositories/MemberRepository.cs
@@ -365,6 +365,8 @@ namespace Umbraco.Core.Persistence.Repositories
             {
                 foreach (var property in ((Member)entity).Properties)
                 {
+                    if (keyDictionary.ContainsKey(property.PropertyTypeId) == false) continue;
+
                     property.Id = keyDictionary[property.PropertyTypeId];
                 }
             }
diff --git a/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj b/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
index aa461053d3..4e9774e18b 100644
--- a/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
+++ b/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
@@ -2412,9 +2412,9 @@ xcopy "$(ProjectDir)"..\packages\SqlServerCE.4.0.0.1\x86\*.* "$(TargetDir)x86\"
         <WebProjectProperties>
           <UseIIS>True</UseIIS>
           <AutoAssignPort>True</AutoAssignPort>
-          <DevelopmentServerPort>7510</DevelopmentServerPort>
+          <DevelopmentServerPort>7530</DevelopmentServerPort>
           <DevelopmentServerVPath>/</DevelopmentServerVPath>
-          <IISUrl>http://localhost:7510</IISUrl>
+          <IISUrl>http://localhost:7530</IISUrl>
           <NTLMAuthentication>False</NTLMAuthentication>
           <UseCustomServer>False</UseCustomServer>
           <CustomServerUrl>