Has no properties - debug message?

[Patrick McHale]

Hi,  (reposted with more information)

I have recently made changes to a project I am working on and for some
reason I am now getting a message in the debug window which says:

      components.classes.webterm has no properties

In the HTML file I have stated:

var webterm = Components.classes["webterm"].createInstance();
webterm =
webterm.QueryInterface(Components.interfaces.nsIWebtermPluginInstance);

var str = new Object();
function Connect()
{

netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
    webterm.GetVer(str);
    alert(str.value);
}

function SetText()
{

netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
     document.xpwebtrm.nsIWebtermPluginInstance.text = "Hello Patrick"
}


In the C++code I have a class

class CWebTermCtrl :
     public nsIWebtermPluginInstance
{
    etc
}

Then I have a method:

NS_IMETHODIMP
CWebTermCtrl::GetVer(char **aValue)
{ 
      const char myResult[] = "CWebTermCtrl::Get Version"; 
      if(!aValue)
           return NS_ERROR_NULL_POINTER;
      *aValue = (char*) nsMemory::Clone(myResult,sizeof(char)*(strlen(myResult)+1));
      return (*aValue) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
 
NS_IMETHODIMP 
CWebTermCtrl::GetText(char * *aText)
{
     if(!fText)
    {
         *aText = NULL;
         return NS_OK;        
    }
    char* ptr = *aText = (char*) nsMemory::Clone(fText, strlen(fText)+1);
    return ptr ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}


In the past both GetVer and SetText have worked fine - but now I don't know why the 
routine for accessing the C++ GetVer method has stopped working.
 

Would be grateful for some advice about what I have missed ?
 
 
Also I have been getting this message but this has been appearing since day one - is 
this a bug as
have installed mozilla several times and this still appears.
 
chrome://communicator/content/securityUI.js line 30 
components.classes['@mozilla.org/secure_browser_ui;1'] has no properties