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HomeHomeArchived Discus...Archived Discus...Idle Forge ProjectsIdle Forge ProjectsChatChatChat Error -"Cannot convert undefined or null.." Error is in some browsers, not all... HELP!Chat Error -"Cannot convert undefined or null.." Error is in some browsers, not all... HELP!
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12/29/2009 5:35 PM
 

I am trying to get the chat module at http://www.epilepsyone.org working. When I go to the chat page using Opera, I get the following error message:

Error: Statement on line 66: Cannot convert undefined or null to Object Backtrace: Line 66 of linked script http://www.epilepsyone.org/DesktopMod...: In function receiveChatMessage var moduleID = topNode.getAttribute('MID'); Line 180 of linked script http://www.epilepsyone.org/js/dnn.xml... this.successFunc(sRes, this.context, this); //1.3 Line 1 of function script window.parent.dnn.xmlhttp.requests['2'].complete(window.parent.dnn.dom.getById('txt', document).value); ...

This error message ALSO appears in Safari and IE, and yet in Firefox, the chat module appears to work.

I've searched the forums and see that others have had this issue but I can't seem to find an actual SOLUTION. Can someone PLEASE help me out wtih this? Thanks!

Lissarae7@yahoo.com

 
New Post
12/30/2009 1:37 AM
 

Ok, I found a solution here:

http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/133/threadid/328309/scope/posts/Default.aspx

QUOTE:

10/18/2009 10:53 PM
        
Ben

A solution! (or at least a work-around)
   

The problem seems to be that the chat message updates received from the server have a prefix code on them that wasn't there before; I'm not sure if this is by design or a bug.  The XML parsers used on other browsers happily ignore this prefix, but MSXML (Internet Explorer's XML parser) doesn't like it. So I tweaked the JavaScript for the Chat module to discard this prefix if present.

To apply this workaround, you need to edit DesktopModules\Chat\DnnChat.js:

    * Go to line 59. The preceeding lines should be:

      function receiveChatMessage(result, context)
      {
          try
          {
         

    * Paste the following:

              // WORKAROUND: MSXML is choking on a lead character that we're getting.
              // So strip off anything before the opening '<'
              while ((result.length > 0) && !(result.charAt(0) == '<')) {
                  result = result.slice(1);
              }

         
I've tested this with IE8 (current), Safari (current), Firefox (recent), and Google Chrome (current).

Hope this helps!

/End QUOTE

So, thanks, Ben!

 

Now the problem is this: While the above workaround got rid of the error message, the chat smilies don't show up in the Safari browser. They're just little boxes wtih question marks on them. A small thing, yes, but something I'd like to fix if anyone has any suggestions. Thanks!

 

Lissarae7@yahoo.com

 
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HomeHomeArchived Discus...Archived Discus...Idle Forge ProjectsIdle Forge ProjectsChatChatChat Error -"Cannot convert undefined or null.." Error is in some browsers, not all... HELP!Chat Error -"Cannot convert undefined or null.." Error is in some browsers, not all... HELP!


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