Step: 1
Create a textfile and call it "compatibility.reg"
Step: 2
Rightclick -> edit
Step: 3
Copy paste this
Code:
Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers] "C:\\Program Files (x86)\\GameforgeLive\\Games\\DEU_deu\\AION\\Download\\bin64\\aion.bin"="WIN7RTM"
use "\\" between every folder.
Step: 4
Save and execute the file you've created, click on yes at the next popup.
Step: 5
Done, try to launch Aion in 64 bit now.
I'll attach my 64 bit launcher here if you need it.