answer page empty when i update to wordpress 4.0.1

Please send me username & password of your site (via private answer) for further checking.
Regards,

Hi,
We are using default ajax link of WordPress to process and insert questions, answers into the WordPress database, as you can see in this link http://myclass.vn/wp-admin/admin-ajax.php?action=dwqa-add-answer. Also, I notice that as normal user was not allowed to work on backend, please check and make sure all your plugins do not prevent users doing an ajax request.
Regards,

Dear Sir,
Would you like help me how can i fix this error. I cannot add comment , when i click add comment button in Admin, it disable and also cannot answer a lot of user’s questions!
Thank a lot!

Hi,
You have to edit this file wp-includes/js/quicktags.min.js and delete (or comment) this instruction:
a._close(“”,c.canvas,c)
Obviously, that instruction is there for a reason, so please be very careful as this can have a negative impact in other parts of the plugin.
DO IT AT YOUR OWN RISK.
Hope this helps !

You are great! Thanks a lot for your support!

Hi Dominic,
I commented your suggestion but still cannot Add Comment and still problem with Aswer question.
Please help me!
Thanks

Hey Folks,
will there be an update for the latest WP build 4.0.1? I would prefer regulare update instead of just “remove” a line of code out of the core.
Thanks for your answers.
// Natzer

Hi Dominic,
Please help me how to solve this problem, my users waiting from you!
Thank a lot

 @dominic is there still no update?

Hi,
Apologies for the delay in replying to you.
I really sorry to know that you disabled our plugin when checking your site. That may be because you waited for our reply a long time 🙁 .
In case that you are still interesting in our plugin, could you kindly re-active our plugin, we will have high priority to help you out tomorrow.
Plus, if you want, we can re-install it for you from scratch.
Look forward to hearing your reply soon.

Thanks Dominc a lot!
I reactive your plugin : http://myclass.vn/hoi-nhanh/, please check it help me!
I and user on my site love your plugin very much! It help my community improve!
Best regards,

Hi natzer,
Page to list all question of your site is
http://www.n-natzer.de/question/ not http://www.n-natzer.de/questions/.
Please re config your menu link to http://www.n-natzer.de/question/

Hi @songle ! 
The issue come from your theme not our plugin. To resolve this issue, please using FTP you can try increasing the memory for PHP and WordPress in several different ways:
1) You can edit the memory_limit line in your php.ini (if you have access to that file) to increase memory to 64M (128m or 512m):
memory_limit = 64M;
2) If you can’t get to the php.ini file, add this line at the top of your .htaccess file:
php_value memory_limit 64M
If that doesn’t work or throws a “500 Internal Server Error”, delete the line from .htaccess.
3) Try adding the line below near the top of your wp-config.php file, a few lines of white space below the opening <?php
define('WP_MEMORY_LIMIT', '64M');
If none of those work, your host probably doesn’t allow memory allocation overrides. You’re stuck with what they give.
You can run phpinfo to see what kind of memory allocation you already have. Make a plain text file and call it phpinfo.php and put just this line in it:
<?php phpinfo(); ?>
then put the file in the root of your server, and then go to that file with your web browser. You’l see all the php info you need; scroll down for memory settings. If you get an error, that means your web hosting company won’t allow phpinfo to run for security reasons
Hope this helps !