Themes - Error in picking a new one

[TF_]

Hello. I get an error in my theme template, it's the first theme I "can" pick out of 3.

Code Select Expand


Notice: Undefined index: 6 in /usr/home/sites/treningsforum.no/www/forum/Sources/Themes.php on line 452

Notice: Undefined index: num_users in /usr/home/sites/treningsforum.no/www/forum/Themes/blue/Themes.template.php on line 202
Notice: Undefined index: num_users in /usr/home/sites/treningsforum.no/www/forum/Themes/blue/Themes.template.php on line 202
personer bruker dette designet

Not too sure why, anything I can do to make that go away? Below that I got 2 themes

[Oldiesmann]

Looks like your language files are incomplete. I'm not sure what language you're using (obviously it isn't English), but try uploading all the language files again.

[[Unknown]]

You may have old theme listing data.

Please try deleting old themes and reinstalling them.

-[Unknown]