RAD Image Editor page crashes

[Brijen]

I am using RAD Image editor on Sharepoint 2010 site to edit images from doc library. (intended document library contains Audio, Video, Images, Documents(word, PDF) etc.)

My issue is when I click on image items, page works fine, image gets loaded into page, I can edit it and save it as per requirement.
but when I click on any  media other than image type, page is crashed with error "Parameter is not valid. "

this error occures in (from stack trace)

Telerik.Web.UI.RadImageEditor.GetCurrentEditableImage() +251
Telerik.Web.UI.RadImageEditor.ApplyClientOperations() +35
Telerik.Web.UI.RadImageEditor.ControlPreRender() +27

I wish to handle the selection of media other than image type in my code with appropriate message, 
but it seems that prerender is being called even before page_load.

please suggest me the reason of error and how to handle it.
here is complete stack trace 

[ArgumentException: Parameter is not valid.]
   System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData) +430
   System.Drawing.Image.FromStream(Stream stream) +14
   Telerik.Web.UI.ImageEditor.CacheImageProvider.LoadImage(String imageUrl, String physicalPath, HttpContext context) +234
   Telerik.Web.UI.RadImageEditor.GetCurrentEditableImage() +251
   Telerik.Web.UI.RadImageEditor.ApplyClientOperations() +35
   Telerik.Web.UI.RadImageEditor.ControlPreRender() +27
   System.Web.UI.Control.PreRenderRecursiveInternal() +108
   System.Web.UI.Control.PreRenderRecursiveInternal() +224
   System.Web.UI.Control.PreRenderRecursiveInternal() +224
   System.Web.UI.Control.PreRenderRecursiveInternal() +224
   System.Web.UI.Control.PreRenderRecursiveInternal() +224
   System.Web.UI.Control.PreRenderRecursiveInternal() +224
   System.Web.UI.Control.PreRenderRecursiveInternal() +224
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3394

If you wish I can provide screen shot of error also
Looking forward for your suppport.

[Vessy]

Hi Brijen,

I am not quite sure if I understand you completely. Could you please elaborate what exactly do you mean by "...it seems that prerender is being called even before page_load"?

I contacted the RadImageEditor developers and they ensured me that the only place where the ControlPreRender() is triggered is the OnPreRender() server-side event.

Could you please explain in more details the specific scenario? It would be of great help if you provide us with the WebPart of your project and/or the code snippets demonstrating the issue.

Regards,
Veselina
the Telerik team