blanc site after "manage keys"

Hi,

i have installed Dolphin 7.0.7 Dolphin.

If i manage a key under "manage language" ,after that in administration i cant use all links...

for example "Advanced Settings" - there comes then a blanc white site.

some links work others not...

If i dont manage any key everything works fine.

What is wrong ??

greets franz

now i know why....

i have two templates installed - if i delete one of them by a ftp-programm, then i get this problem...

if i adjust in settings,that the user cant change template,then all is ok...