Error Message on startup

Hi, I was just playing last night no problem. Today after work when I run the launcher, I get an error message saying: You cannot run Aion with the version of DirectX currently installed. Aion requires the DirectX version released after June, 2008. You can download the correct version from www.aiononline.com. -- Attempt to access invalid address.

CreateSystemInterface Failed.

Why is it doing this?

 

Its doing that because u need to reinstall Directx 9

here http://www.softpedia.com/get/System/OS-Enhancements/DirectX-9.0c-Redistributable.shtml

 

not so sure thats the real cause since he said he played fine be4. quite a few people that played be4 r getting this error lately. if he was able to get on earlier, it means he already has it. also people said reinstalling directx didnt help them

 

Yea, it was working at first when I reinstalled it but now the error is back again after shutting off my computer. And now when I try to do the installation again, it says it's already installed but the error message isn't going away. Is there anything I can do to permanently fix this problem?