UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support [7.2] CSS not generated , why?

Hi , I just upgrade from 6.5.x to 7.2
But it doesn't generate CSS , my site is just pure text. I don't know why.

When testing ubbt 7.1 , I can see ubbthreads_xxxxxxxx.css in styles/ directory.
But I cannot find such a file in styles directory. It's permission is correctly set to 777.
What may cause the problem ???

As daft as this seems,
you will find that the control panel shows correctly so you should be able to navigate.

But edit the style sheet and do this ?

What does the style sheet look like in "EDIT" preview
hit the update button. Can you see what you think
you should be seeing?

Do this in edit mode

Name, Images & Wrapper
General Images

Change from default to dark
and submit
and then change them back again ?

I have only one (default) style sheet named "ubbthreads_stock".
After clicking it , it shows only text :

No not that preview.

First Click "EDIT"
then preview

well , I maybe found the problem.
In ubbt 7.2 , it needs a "1.php" located in styles/ directory.
But after installed , there's no such a file.

After I copy from 7.1 and related css files to here, it works.

An easy fix would be to enter the style (edit) then "save" it; this will re-generate all needed files.