xTuple versions 4.8 and earlier are no longer supported. Upgrading your xTuple system is recommended.
As xTuple has continued releasing newer versions including the recently released version 6.0.1, they have discontinued support for old versions 4.8 (released in 2014) and earlier versions. Review xTuple’s new features and consider upgrading to a newer version so you will be guaranteed support for your xTuple system.