When you try to run files & settings on to a new computer, you may get the error message:
Your migration store was created with a previous version of File and Settings Transfer Wizard. Please collect your settings using the current version of the Files and Settings Transfer Wizard.
To fix this, remove the (optional) Windows hotfix "Update for Windows XP (KB896344)".
(Click Start -> Control Panel -> Add & Remove Programs, check the "show updates" box, then remove the hotfix.)
This hotfix enables you to transfer files & settings from a 32-bit machine to a 64-bit machine, but causes problems when you're transferring to/from a 32-bit machine.