1. Close your internet connection. IMPORTANT

  2. Install application from "Adobe Illustrator 18" folder by double
     clicking on the "Set-up.exe" (With admin rights on your system.) to
     default directory.

  3. Choose TRY install. 

  4. Select your language. (You can not change it after installation)

  5. Open the application as trial and select "Continue trial" and close.

  ** IMPORTANT : If you miss this step application may not work properly.

  6. Copy "amtlib.dll" and paste it in to installation folder by 
     overwriting (replacing). It is generally:

C:\Program Files\Adobe\Adobe Illustrator CC 2014\Support Files\Contents\Windows

  7. IMPORTANT, use your firewall to stop internet connection of 
     application and uncheck automatic updates. Don't update it.