The error message is in the JavaScript console.

[whynot]

The following error occurred
The server responded with an error. The error message is in the JavaScript console.

Since the upgrade to 1.2.1 we cannot start a PC.

 

[Jeremy]

If you open the JavaScript console, what's the error?

 

[whynot]

ErrorException: Fatal Error: syntax error, unexpected T_FUNCTION - library/XenForo/Mail.php:362

 

[borbole]

ErrorException: Fatal Error: syntax error, unexpected T_FUNCTION - library/XenForo/Mail.php:362

Try to overwrite the file mentioned in the error message with a fresh one from the xenforo 1.2. package and see if it would help.

 

[whynot]

Try to overwrite the file mentioned in the error message with a fresh one from the xenforo 1.2. package and see if it would help.

Rushing to work. I'll do it, thank you!

 

[whynot]

Downloaded and uploaded the whole upgrade package.
Uninstalled Resource Manager.
Cleared browser cache.
Used another browser.

The problem insist.

if ($emailIsRtl)
        {
            $__bodyHtml = preg_replace_callback('/<rtlcss>(.*)<\/rtlcss>/sU', function ($matches)
            {
                return XenForo_Template_Helper_RightToLeft::getRtlCss($matches[1]);
            }, $__bodyHtml);
        }
        else

Line 362:

$__bodyHtml = preg_replace_callback('/<rtlcss>(.*)<\/rtlcss>/sU', function ($matches)

 

[whynot]

}, $__bodyHtml);

What is the comma for?

 

[Mike]

http://xenforo.com/community/threads/xenforo-1-2-1-released.58022/#post-618539

 

[whynot]

Thank you, Mike, I'll try it.

 

[whynot]

It works,Mike.

I've had two error dialog message boxes when posting - it says the error message is in the javascript console.
Both posts were successful though so it seems to be cosmetic.
Make that three - it happened again.

That came from one of the members before patching mail.php.