"System.NullReferenceException" on load and "String cannot have zero length" of a page observed with Stackify Prefix tool

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Unplanned

Last Updated: 17 Jul 2020 09:55 by ADMIN

ADMIN

Plamen

Created on: 16 May 2016 12:06

Category: UI for ASP.NET AJAX

Type: Feature Request

"System.NullReferenceException" on load and "String cannot have zero length" of a page observed with Stackify Prefix tool

6 comments

ADMIN

Rumen

Posted on: 17 Jul 2020 09:55

Another reason for the problem is discussed on https://docs.telerik.com/devtools/aspnet-ajax/knowledge-base/common-telerik-web-ui-pdb-not-loaded-error, e.g.

Go to Tools -> Options
Make sure that the Enable Just My Code option is enabled and the Enable .NET Framework source deactivated:

Regards,
Rumen
Progress Telerik

ADMIN

Rumen

Posted on: 21 Apr 2020 14:03

Hi Fernando,

The exception message doesn't reveal what exactly might be the issue.

Can you please check the following help article to verify if all the settings are set correctly:
http://docs.telerik.com/devtools/aspnet-ajax/controls/radskinmanager.

Have you also tried to disable the script combining by setting EnableScriptCombine="false" and EnableStyleSheetCombine="false":

<telerik:RadScriptManager EnableScriptCombine="false" ...
<telerik:RadStyleSheetManager EnableStyleSheetCombine="false"

If the issue still occurs, could you please send us a small runnable sample project that demonstrates the problem, so that we can troubleshoot it?

Regards,
Rumen
Progress Telerik

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insomnia

Posted on: 16 Apr 2020 07:38

Same problem :

System.NullReferenceException
HResult=0x80004003
Message=Referencia a objeto no establecida como instancia de un objeto.
Source=Telerik.Web.UI
StackTrace:
at Telerik.Web.SkinRegistrar.GetAppSetting(String name, Page page)

VS2019 16.5.4

Telerik.Web.UI 2020.1.219.45

ADMIN

Rumen

Posted on: 24 Jun 2019 16:00

Hi JT,

Does the error still persist if you disable the script combining by setting EnableScriptCombine="false" and EnableStyleSheetCombine="false":

<telerik:RadScriptManager EnableScriptCombine="false" ...
<telerik:RadStyleSheetManager EnableStyleSheetCombine="false"
?

Thank you for testing it.

Regards,
Rumen
Progress Telerik

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Posted on: 17 Jun 2019 19:39

I am also receiving this error for non-embedded (CDN) applied themes with the 2019 build. I would consider this a bug rather than a feature request.

Tom

Posted on: 16 May 2016 17:54

I get this error.  I'm using non-embedded Telerik themes:

System.NullReferenceException: Object reference not set to an instance of an object.
  at Telerik.Web.SkinRegistrar.GetAppSetting
  at Telerik.Web.SkinRegistrar.GetDefaultSkinsAssemblyName