Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed

[fijula]

I have a telerik grid with masterdetail view which works fine on dev machine, but on the produciton server gives the following error when trying to click on the + to expand the detail view
Message: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed.
Line: 868
Char: 13
Code: 0
URI: http://stg/ScriptResource.axd?d=WPWgUqfqWNOKwEIK623Rj1atHxx0muHp2TuYIOyTDuZq4iZdR4d8M3a94sBKs28ffLNvQd0IhbwuKOECVhpyU_sPvVPXMieAwhP9vcB-7gyWfNLudOBik1XZsFAl_Mv1J0KWTyMBwF3XMNtAuY91y0fExR5oYve9HYEYEtzdevEvZXV6AydUtwWdBzwQDWCgBPrZ9Q2&t=2610f696


On the source at Line 868,, it is the javascript postback code.

I have noticed that the error is not occuring if I do an enableAjax = "false" on the radajaxmanager.

 IIS runs on the Classic AppPool.

Is there any other place I should be checking on?

[Iana Tsolova]

Hello Fijula,

Do you have calls to Response.Write(), Response.Redirect(), tracing enabled for the page, or using custom http filters?
You can also try troubleshooting the web resources as described in this article.

Greetings,
Iana
the Telerik team

[fijula]

No I  do not have any of these calls. Please see the attached files. This problem occurs only on production!

Thanks
Fijula

[Iana Tsolova]

Hello Fijula,

I reviewed the images though based on the information there I am not sure if I can determine what is the problem. However, if you have RadCompression enabled, you can try disabling it and see how it goes. If the problem persists, I will need to be able to replicate the error and probably debug the project to see what went wrong.

Best wishes,
Iana
the Telerik team