Asp.Net Script Manager is ambiguously hatası

Eğer projenizde böyle bir hata alıyorsanız aşağıdaki kodu web.config’e ekleyip System.web.extensions lardan birini silin.Birden fazla System.web.extensions olması hatayı alma sebebinizdir.

< runtime>

< assemblybinding xmlns="urn:schemas-microsoft-com:asm.v1">

< dependentassembly>

< assemblyidentity name="System.Web.Extensions" publickeytoken="31bf3856ad364e35">

< bindingredirect newversion="3.5.0.0" oldversion="1.0.0.0-1.1.0.0">

< /bindingredirect>

< dependentassembly>

< assemblyidentity name="System.Web.Extensions.Design" publickeytoken="31bf3856ad364e35">

< bindingredirect newversion="3.5.0.0" oldversion="1.0.0.0-1.1.0.0"> < /bindingredirect>

< /assemblyidentity>

< /dependentassembly>

< /runtime>