CSS file doest not open on "System->Conf->Display"

-- HikaShop version -- : 2.5.0
-- Joomla version -- : 3.4.4
-- Browser(s) name and version -- : Firefox/Chrome

Hello,
I would like to change some CSS settings but when using System->Configuration->Display->CSS->front/backend->edit, the window is empty.
I am using the jsn-glass-pro template.
Thanks for any help

Hello,

1. Can you give us more information about your issue through some screenshots for example ?

2. Also, can you test it with one of the default Joomla template to see if it correctly works ?

Thank you.

Hello, Thanks for your answer,

Here is what I get (attached).

I also tried templates beez3 and beez5 for frontend and halthor for backend with no difference.
However it works fine on test site with same configuration.

Hi,

Can you download again the install package of HikaShop on our website and install it on yours and see if that helps ?
Since we don't have the problem on our end it's kind of strange.
Do you have the problem on our demo website ?

Hi,
I tried to download and install again but this does not help.
I cannot check if it works on your demo site as demo user does not have rights to access those settings.
But it works on my test site.
It seems that all files which open with the "pen icon" are locked (css, language, "override taxe zone" or "image" in shipping configuration).
However I can update php files.

Hello,
It seems like that issue only happen with the last Joomla 3.4.4 version, you'll find the solution through that thread ; www.hikashop.com/forum/install-update/87...to-3-4-4.html#214269

Hello,
Thank for the tip. The popup now opens but does not open the file and displays an error 404 instead of css.
Same problem to select an image for transport but with error 403

Hi,

We don't have the problem on our end.
Can you provide a backend access with a link to this thread via our contact form so that we can look at the problem ?
www.hikashop.com/support/contact-us.html

Hi,

Ok, revert the patch of the other thread. Instead, use the official patch of Joomla:
github.com/joomla/joomla-cms/pull/7845/files
(red line to remove, green line to add)
That should work better.

Hi,
Thanks a lot, it works.
Good job
Bye