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diff --git a/LibOVRKernel/Src/Kernel/OVR_String_FormatUtil.cpp b/LibOVRKernel/Src/Kernel/OVR_String_FormatUtil.cpp
new file mode 100644
index 0000000..d52b6bb
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+++ b/LibOVRKernel/Src/Kernel/OVR_String_FormatUtil.cpp
@@ -0,0 +1,76 @@
+/************************************************************************************
+
+Filename    :   OVR_String_FormatUtil.cpp
+Content     :   String format functions.
+Created     :   February 27, 2013
+Notes       : 
+
+Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.2 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "OVR_String.h"
+#include "OVR_Log.h"
+
+namespace OVR {
+
+void StringBuffer::AppendFormat(const char* format, ...)
+{       
+    va_list argList;
+    char    buffer[512];
+    char*   bufferUsed = buffer;
+    char*   bufferAllocated = NULL;
+
+    va_start(argList, format);
+
+    #if !defined(OVR_CC_MSVC) // Non-Microsoft compilers require you to save a copy of the va_list.
+        va_list argListSaved;
+        va_copy(argListSaved, argList);
+    #endif
+
+    int requiredStrlen = OVR_vsnprintf(bufferUsed, OVR_ARRAY_COUNT(buffer), format, argList); // The large majority of the time this will succeed.
+
+    if(requiredStrlen >= (int)sizeof(buffer)) // If the initial capacity wasn't enough...
+    {
+        bufferAllocated = (char*)OVR_ALLOC(sizeof(char) * (requiredStrlen + 1));
+        bufferUsed = bufferAllocated;
+        if(bufferAllocated)
+        {
+            #if !defined(OVR_CC_MSVC)
+                va_end(argList);
+                va_copy(argList, argListSaved);
+            #endif
+            requiredStrlen = OVR_vsnprintf(bufferAllocated, (requiredStrlen + 1), format, argList);
+        }
+    }
+
+    if(requiredStrlen < 0) // If there was a printf format error...
+    {
+        bufferUsed = NULL;
+    }
+
+    va_end(argList);
+
+    if(bufferUsed)
+        AppendString(bufferUsed);
+
+    if(bufferAllocated)
+        OVR_FREE(bufferAllocated);
+}
+
+} // OVR