Error saving main forum page with Google Chrom

[sabink]

1. vBulletin Version - 5.2.0 Patch Level 1
2. PHP Version - 5.5.31
3. MySQL Version - 5.1.73
4. Any Addons installed - No
5. Does the issue occur in a default style? - YES
6. Does the issue occur using the English language provided? - YES
7. Error message on the screen' - Error saving page. (Error code 200) Please try again.
8. Browser and Browser version used. - Chrom Version 48.0.2564.97 m

I'm not sure, but I think the problem begun after updating to vB 5.2.0 Patch1.

Using Chrom I cannot save the default page template.

With Firefox it works ok.



I have cleared file and images cache, but with no difference.

Saving other pages works ok.