groupdescriptor NullReferenceException ...

[Saman]

Hello every one...
I use the groupdescriptor by smart tag and set the settings by wizards.
It works great and grouping well,but some times,without any reasons and without any execution of event,
the NullReferenceException thrown...and i don't know why
It's very bad...please help

[Stefan]

Hi Saman,

Thank you for writing.

The provided details are not enough for me to reproduce the experienced exception. Please provide me with the exacts steps that I need to follow in order to reproduce the issue. Additionally, you can capture a video by using this free tool - Jing. 

I am looking forward to your reply.

Regards,
Stefan
the Telerik team

[Saman]

Hi Stefan,
Thanks for your reply...
I download the free tool and try to capture the video for you.
But this problem happens some times and without any clear reason.
But i try to know that and capture video.
I use Telerik 2011 Q3.

Best Regards

[Saman]

Hi Stefan
I capture the problem, but i can't upload swf format
Jing record by this format
U upload the captured video on mediafire and send for you
http://www.mediafire.com/download.php?0uyor7bobqhovxj

Thank you

[Stefan]

Hi Saman,

The video just shows me the exception message, which is not enough to determine what causes it. I understand that it happens randomly and I will appreciate it if you manage to get a reproducible scenario and get back to me with it, so I can replicate the exception on my end and investigate what causes it.

On a side note, Jing offers uploading the video after capturing to ScreenCast and you can use this option to store your videos and provide links to them (see attached image).
 
Greetings,
Stefan
the Telerik team

[Saman]

Hi Stefan,
Thanks for your reply...

I don't know why this exception thrown and i don't know which scenario cause this problem...
But i review my form's code behind.
I found an element that's name is : object_9c0d9793_d785_4e13_86ad_735d72d4f02e
And i don't know what is it!

I attached the image for you

Best Regards ...
Saman

[Stefan]

Hi Saman,

Such an issue was already reported by another users or ours, however, our department invested quite a while in investigating the possible reasons that might cause such an issue, with no avail. The provided information in this thread is also not enough for to trace this issue down. If you manage to get a scenario which will always replicate the undesired behavior, feel free to get back to us with it, so we can investigate it and address any possible issues. Until then I am afraid that there is nothing I can do about this.

Thank you for your time and efforts.
 
Regards,
Stefan
the Telerik team