diff --git a/ArcFormats/Properties/AssemblyInfo.cs b/ArcFormats/Properties/AssemblyInfo.cs
index 4460365d..1ab6e281 100644
--- a/ArcFormats/Properties/AssemblyInfo.cs
+++ b/ArcFormats/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion ("1.1.10.423")]
-[assembly: AssemblyFileVersion ("1.1.10.423")]
+[assembly: AssemblyVersion ("1.1.10.427")]
+[assembly: AssemblyFileVersion ("1.1.10.427")]
diff --git a/ArcFormats/ZLibStream.cs b/ArcFormats/ZLibStream.cs
index 5673c2b2..0beb7a4b 100644
--- a/ArcFormats/ZLibStream.cs
+++ b/ArcFormats/ZLibStream.cs
@@ -79,11 +79,20 @@ namespace GameRes.Compression
 
         public ZLibStream (Stream stream, CompressionMode mode, CompressionLevel level, bool leave_open = false)
 		{
-            if (CompressionMode.Decompress == mode)
-                InitDecompress (stream);
-            else
-                InitCompress (stream, level);
-            m_should_dispose_base = !leave_open;
+            try
+            {
+                if (CompressionMode.Decompress == mode)
+                    InitDecompress (stream);
+                else
+                    InitCompress (stream, level);
+                m_should_dispose_base = !leave_open;
+            }
+            catch
+            {
+                if (!leave_open)
+                    stream.Dispose();
+                throw;
+            }
 		}
 
         private void InitDecompress (Stream stream)