Error upgrade to 5.2.3

[ironmanstres]

Hello,

I have a problem with my progress upgrade vbulletin
Error:
Upgrading to 5.2.0 Alpha 3
Warning, editable child not found for theme .
Warning: preg_replace_callback(): Requires argument 2, '', to be a valid callback in .../includes/functions.php on line 3617
Warning, editable child not found for theme .
Warning: preg_replace_callback(): Requires argument 2, '1.19668272483E-316', to be a valid callback in .../includes/functions.php on line 3617
Step 7 - Unexpected Text:

https://vborg.vbsupport.ru/external/2016/08/4.png

is there something wrong ?
I've uploaded a second time (no error), but the result is the same.
I'm using PHP 5.4.45
Please help me to solve this problem.

Thanks friend

[shimei]

Your best bet is to post at Vbulletin.com. This is a mod site, you'll surely get more responses at Vbulletin.com.