Double-click in finder, will not open files with dedicated program/app.

[caleidosCope]

Hi.

 

I got a strange thing happening here.

 

If i try to open a file by double-clicking in finder, it seems to, but will not open a .rtf or Pages-file or else (I have to right-click and select the program/app to open the file).

 

If i Terminal this:

 

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user

 

everything is fine. until reboot.

 

How can i fix this permanently?

 

Thanks in advance.