diff --git a/CSharp/Libraries/UniversalEditor.Core/Accessors/MemoryAccessor.cs b/CSharp/Libraries/UniversalEditor.Core/Accessors/MemoryAccessor.cs
index 63460825..9c94e51d 100644
--- a/CSharp/Libraries/UniversalEditor.Core/Accessors/MemoryAccessor.cs
+++ b/CSharp/Libraries/UniversalEditor.Core/Accessors/MemoryAccessor.cs
@@ -56,7 +56,7 @@ namespace UniversalEditor.Accessors
 					break;
 				}
 			}
-			if (start >= 0 && start < _data.Length)
+			if (start >= 0 && start <= _data.Length)
 			{
 				ptr = start;
 			}
@@ -75,7 +75,8 @@ namespace UniversalEditor.Accessors
 
 		internal override int ReadInternal(byte[] buffer, int start, int count)
 		{
-			System.Array.Copy(_data, 0, buffer, start, count);
+            System.Array.Copy(_data, Position, buffer, start, count);
+            Position += count;
 			return count;
 		}
 		internal override int WriteInternal(byte[] buffer, int start, int count)
diff --git a/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj b/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj
index 6ffeee03..1f5d4154 100644
--- a/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj
+++ b/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj
@@ -5,7 +5,7 @@
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProductVersion>8.0.30703</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
-    <ProjectGuid>{A92D520B-FFA3-4464-8CF6-474D18959E03}</ProjectGuid>
+    <ProjectGuid>{2D4737E6-6D95-408A-90DB-8DFF38147E85}</ProjectGuid>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>UniversalEditor</RootNamespace>
diff --git a/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Picture/PortableNetworkGraphics/PNGDataFormat.cs b/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Picture/PortableNetworkGraphics/PNGDataFormat.cs
index ea8e3e5b..df241b7f 100644
--- a/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Picture/PortableNetworkGraphics/PNGDataFormat.cs
+++ b/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/DataFormats/Multimedia/Picture/PortableNetworkGraphics/PNGDataFormat.cs
@@ -59,7 +59,7 @@ namespace UniversalEditor.DataFormats.Multimedia.Picture.PortableNetworkGraphics
             compressionModule.ImageWidth = pic.Width;
             compressionModule.ImageHeight = pic.Height;
             compressionModule.Method = compressionMethod;
-            compressionModule.BytesPerPixel = ((bitDepth / 8) * 3);
+            compressionModule.BytesPerPixel = (int)(((double)bitDepth / 8) * 3);
             
             byte[] uncompressed = compressionModule.Decompress(uncompressedFilteredImageData);