XOOPS 2.0.7
IPB mod
Have working site and test site.
My username and password bor both is the same.

Here is what happened.
Site working very good using the upgraded version 2.0.7.
I found a new theme I wanted to change over to.
I first uploaded it to my test site and eid some editing. (not much, just the header mostly)
Then uploaded it to my folder that had the main site.
I have webmaster only permission to view themes block. So I have been using this theme for several days.

Today I decided to change the default theme.
XOOPS admin --> Preferences Main »» General Settings
Default theme. Hilighted the one I wanted and clicked "Go" at the bottom of the page.
When I was returned to the admin page. I clicked the logout link top right.
I was returned to a blank page. All white. Nothing, nada.
Of course I did the panic thing and just sat here dumbfounded. What had I done. The new theme has been working for several days.

Finally I logged into my test site, went to admin section. Then, just a fluke wild idea, I changed the address in the address line of the browser to the path of the main site. It worked and was now in the main site page where I changed the default theme back to previous one.

Now using the old theme and can view the new one from the theme block.

What could have gone wrong?

turn on PHP debug and MySQL debug and SMarty debug and see what comes up when viewing the blank page..

Tip: open several browser windows: one with the system admin->preferences->general settings page, one with just the admin and one with the site, so you can always revert back to your old theme.

Herko

IU will do that but will wait until traffic is at a minimum. Very early in the morning I will try.
Thank you.

Also learned another tip. Don't log out.