Areca is an open-source backup software which is located on Source Forge. Its official releases doesn't support 64-bit Windows which is quite unconvient for me, because I'm using 64-bit Windows on two machines, and backup is simply an essential to me.
The anonying part when you try to start areca is that you can't see any error message and no log can be found. The problem is Areca uses 32-bit SWT library. You can fix this just by replacing the 32-bit SWT library with a 64-bit one. Say you installed Areca to C:\Program Files (x86)\Areca. Go to that directory, delete the swt-win32-*.dll and paste your 64-bit SWT jar file to the lib directory. Go into the lib directory, delete the original org.eclipse.swt.win32.win32.x86_3.2.0.v3232m.jar，and rename the 64-bit jar file to this name. To say this way, you make Areca believes everything is fine, but actually the SWT library is 64-bit now.
Now all set, enjoy using Areca.
