This issue occured when .net 4.0 project is published .net 4.5 environment (like iis over 7.5).
You can fix this bug the way adding config attribute below.
| 1 2 3 4 5 6 7 8 9 | <configuration>   <appSettings>     <add key="wcf:serviceHostingEnvironment:useClassicReadEntityBodyMode" value="true" />   </appSettings> </configuration> | 
This issue has been fixed in .net 4.5.1.