I'm getting this issue too. Sometimes it's referring to the firebug-
channel-listener.js in my firefox extensions folder, but most of the
time, I get this message over and over:

------------------------

[Exception... "'JavaScript component does not have a method named:
"onLocationChange"' when calling method:
[nsIWebProgressListener::onLocationChange]"  nsresult: "0x80570030
(NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED)"  location: "<unknown>"
data: no]

Line 0

------------------------

It's making it increasingly difficult for me to determine whether I
have made any mistakes in my website code or not. I've tried
uninstalling and reinstalling FireBug to no avail.


On Feb 1, 4:33 pm, tirengarfio <[email protected]> wrote:
> Hi,
>
> my error message is similar but there is anything about
> nsSessionStore. Here it is:
>
> [Exception... "'JavaScript component does not have a method named:
> "onLocationChange"' when calling method:
> [nsIWebProgressListener::onLocationChange]" nsresult: "0x80570030
> (NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED)" location: "JS frame ::
> file:///home/tirengarfio/.mozilla/firefox/ow3js98k.default/extensions/[email protected]/components/firebug-channel-listener.js
> :: anonymous :: line 163" data: no]
>
> Any idea?
>
> Javi
>
> On Jan 26, 5:03 pm, John J Barton <[email protected]> wrote:
>
> > On Jan 26, 6:21 am, Camwyn <[email protected]> wrote:
>
> > > Using FF 3.5.7 and FB 1.5.0 I get repeated errors such as:
> > > "[Exception... "'JavaScript component does not have a method named:
> > > "onLocationChange"' when calling method:
> > > [nsIWebProgressListener::onLocationChange]"  nsresult: "0x80570030
> > > (NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED)"  location: "JS frame ::
> > > file:///C:/Program%20Files/Mozilla%20Firefox/components/nsSessionStore.js
> > > :: sss_observe :: line 320"  data: no]
> > > file:///C:/Program%20Files/Mozilla%20Firefox/components/nsSessionStore.js
> > > Line 320"
>
> > > Aside from cluttering up the console, not sure if this is causing any
> > > real problems...but thought I'd bring it up for the FB folks.
>
> > I suggest you bring it up with the nsSessionStore folks, since it is
> > their error message.
>
> > jjb
>
> > > Thanks!

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