Invalid JSON Primitive

[Peter]

hi

i am getting the following error , ive looked through the forums and i cant seem to find any help , the main problem is that i cant replicate it , i have tried on different browsers etc and i cant replicate it .

i am only getting it on a few client machines.

[ArgumentException: Invalid JSON primitive: .]

   System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializePrimitiveObject() +930307

   System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth) +376

   System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer) +120

   System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit) +57

   Telerik.Web.UI.RadButton.LoadPostData(String postDataKey, NameValueCollection postCollection) +238

   System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +1018

   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2653

can you give any suggestions on where i can look to find the error.

[Maria Ilieva]

Hello Peter,

Could you please share your page markup as well as the related code behind so we could further investigate on the issue? Also could you try using regular asp UpdatePanel on the page instead of RadAjax controls and verify if this makes any difference?

Kind regards,
Maria Ilieva
the Telerik team