In certain cases CreatePicture resulted in a corrupted document when opened in Word 2013/2010. The reason was that the docPr id="" attribute was duplicated. A bookmark already had id="7".

Patch provided by Source2702

DocX/Paragraph.cs

 
             int newDocPrId = 1;
             List<string> existingIds = new List<string>();
-            foreach (var docPrId in document.Xml.Descendants(XName.Get("docPr", DocX.wp.NamespaceName)))
+            foreach (var bookmarkId in document.Xml.Descendants(XName.Get("bookmarkStart", DocX.w.NamespaceName)))
             {
-                existingIds.Add(docPrId.Attributes().FirstOrDefault(x => x.Name == "id").Value);
-
+                var idAtt = bookmarkId.Attributes().FirstOrDefault(x => x.Name.LocalName == "id");
+                if (idAtt != null)
+                    existingIds.Add(idAtt.Value);
             }
 
             while (existingIds.Contains(newDocPrId.ToString()))

DocX/Properties/AssemblyInfo.cs

 // 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("1.0.0.16")]
-[assembly: AssemblyFileVersion("1.0.0.16")]
+[assembly: AssemblyVersion("1.0.0.17")]
+[assembly: AssemblyFileVersion("1.0.0.17")]