Error upgrade vbb 3.8 to 4.1.2

[aplinux]

After upgrade vbb 3.8 to 4.1.2 error like this:

http://www.kythuatlaptop.com/forum/hinh/forum.gif

Please, help me!

[Brandon Sheley]

you'll need to use a style for 4.x
change your style to the default 4.x theme and it should work fine

[aplinux]

I changed vbb4 default tyle, but still error.

[BirdOPrey5]

Looks like your CSS is missing. In your vbulletin options there is a choice to put CSS in the file-system or not... I suggest changing this setting, whatever it is, and see if it works right.

[aplinux]

I fixed error. I edit url from (vbb option/Site Name / URL / Contact Details/forum url) is ok.

Ex:
vbb 3.x.x: forum url: http://www.kythuatlaptop.com

upgrade 4.x.x edit forum ulr: http://www.kythuatlaptop.com/forum