I went into the battle.net folder and change agent.db somehow by Right clicking on it and "Open with---> notepad." and it changed into a notepad file. I realized my mistake and changed into shell32.dll file from windows/system32. Now it's icon shows a page with a square box on it and not the normal "gears" look.
And now when i double click on agent.db it says it is not a valid Win32 application.
But the Diablo 3 (prepurchased) setup does work and it goes straight to the diablo 3 installer with no issues.
my question is:
1. Do i have to "fix" the agent.db file? if so how can I do this?
2. Can i still install and play diablo 3 without any issues of the agent.db file???