After installing Windows 7, I got the error, “The application has encountered an unexpected error and is now exiting.”
This happens because the WD SmartWare isn’t installing properly. You can install it manually as follows:
Go to Computer (like My Computer) and right click the drive labelled WD SmartWare. Click “Open.”
Double click on the folder named “WD SmartWare.”
You will see two files named “WD SmartWare Setup (x64)” and “WD SmartWare Setup (x86)”. x86 is for a 32-bit operating system, x64 is for a 64-bit operating system (see below for details).
Double click the appropriate file and WD SmartWare will be installed on your computer.
Then, you should be able to simply plug and play. If you are using encryption, then the password box should pop-up automatically.
(if you’re not sure whether you have 32-bit or 64-bit OS, go to Start -> right click on Computer, click Properties and then read through the information, it should be stated next to System Type)