Question Upgraded to K 3.0.0 but "preview' button does not display message preview

Hi,

Upgraded to Kunena 3.0.0 but now ?preview' post before sending doesn't show 'preview'
>> How to solve this issue without downgrading the currently installed 3.0.0 version or restoring an earlier backup (I can't restore an earlier site backup because a lot or new Kunena contents have been added between)

I'm running:
Joomla!: 2.5.11
PHP: 5.3.3

Thanks in advance for your attention & quick feedback,
Rgrds,

Sounds like a Javascript library conflict. You will probably still have the same issue with K 3.0.1 but you should use K 3.0.1 instead of K 3.0.0

Confirmed. Upgraded to kunena 3.0.1 but the reported issue still happens...
>> If JS conflict could you guide me with the process to follow to debug / detect from where the conflict comes from?
Thanks in advance,
Rgrds,

We must have had hundreds of topics relating to this subject and tips, hints, guides, etc., etc., to help people resolve these problems for themselves. Of course, the place to start is what Joomla extensions are you using that may load some other Javascript library on your site that could possibly be the source of the problem.

These things could involve another Joomla component, or a module, plugin or template and I have made the assumption that you studied the K 3.0 Upgrade Guide carefully, and took all appropriate safeguards, before you went from some old version of Kunena that you were using to K 3.0.0 (and subsequently to K 3.0.1).

And then there's the possibility that your PHP environment is not right to host Joomla. For example, if you do not have JSON enabled then there's no chance that the message preview will work.

We have no clues as to what you have installed on your website because you haven't given us anything to go on. Did you read the category header, the forum announcement, and the FAQs page that will guide you about how to present us with information that may help? That's where I would start.

Other places that may help are

(1) Technical Requirements
(2) Common causes of Mootools (Javascript library) issues and Kunena
(3) Before you post your question, read this first (yes, I'm aware that this topic relates to K 2.0 but the principles and the causes of these kinds of issues are the same)
(4) Javascript and Kunena
(5) [Merged topic]The great Mootools/Javascript conflict discussion (yes, the issues - and the complaints - go all the way back to K 1.6!)

So, you see, there are a few hours of reading of lots of useful information on this subject.

Almost everything I've written above is educated guesswork on my part. If you want my advice, let's start with a few knowns and your configuration report will help us there.

Lastly, 99% of these "I installed Kunena after I installed 30 other components, 200 modules and enabled every plugin in Joomla I could think of" - not that I'm saying you did these things - makes hunting for the needle in the haystack (and we don't even know what the haystack looks like) practically impossible, doesn't it? That's why I think people should, perhaps, read Which came first? The template or the forum?

I hope that a little of this helps. You asked me to guide you; I've given you all the "travel brochures" I could think of.

Thanks a lot for the guide!... I'll read everything you have recommended and I'll try to debug the conflict afterwards.
>> No doubt, I will post here final results right after the debugging work will be done.
Thanks again for your quick answer,
Rgrds,

OK, but I don't think you got the hints about looking at you configuration report, did you?

(Here's another hint: see what is written about 2 cm below where you logged to this site - near the top of this page?)