Restore Error: Path cannot be used at this time
When performing a Microsoft SharePoint 2007 restore you may receive this error:
Object NG_Documents (previous name: Documents) failed in event OnRestore. For more information, see the error log located in the backup directory.
COMException: The path specified cannot be used at this time. (Exception from HRESULT: 0x80070094)
To fix this problem you may need to apply this hot fix: http://support.microsoft.com/kb/946517
Note that this is a hotfix that is applied to Microsoft Windows Server and not to SharePoint itself.