Re: Illegal JSON response when clicking a Submit button

Dave Yeo <[email protected]> Mon, 25 Apr 2016 21:04:11 -0700
Newsgroups	gmane.comp.mozilla.devel.os2
Message-ID	<[email protected]>
On 04/25/16 08:11 PM, Peter Brown wrote:
> Hi Dave
>
> Dave Yeo wrote:
>> Peter Brown wrote:
>>> Hi All
>>>
>>> Using Seamonkey - User agent: Mozilla/5.0 (OS/2; Warp 4.5; rv:24.0)
>>> Gecko/20100101 Firefox/24.0 SeaMonkey/2.21
>>>
>>> I have tried to post in a WDSibyl forum a couple of times and every time
>>> I get the a large errr window appear with the title
>>>
>>>     The page at http://wdsibyl.org says:
>>>
>>>
>>> The error message starts with
>>>
>>>    Error! Illegal JSON response:
>>>    SyntaxError: syntax errorin
>>>    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
>>> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
>>>
>>>
>>> I have reported the problem to the WDSibyl webmaster who responded that
>>> he has checked his logfiles and there is no corresponding error entries;
>>> also the website has not changed since my last post so the problem must
>>> be with your browser.
>>>
>>>
>>> The main problem with the above response is that I have not changed my
>>> browser since I last posted in those forums which, along with the
>>> Seamonkey error message window title, indicates the problem is
>>> elsewhere.
>>>
>>> Possibly related: I do have NoScript installed - wdsibyl.org is Allowed,
>>> not blocked.
>>>
>>> Anyone have any idea how to resolve this problem?
>>>
>>
>> Have you tested in safe mode (Help --> Restart With Addons Disabled)?
>> Have you tried a new test profile?
>> Dave
>>
>
>
> I have now tried with addons disabled and a new profile. No change.
>
> The error message seems to indicate an error in the webpage syntax - or
> am I misunderstanding the message?
>

An error or unsupported feature. You could test with a later build 
instead of a 3 year old browser, you could also note any messages in the 
error console and also validate the page. Both under tools-->Web 
development (I've never actually tried the validate thing)
Dave