In order to update to v1.4.0, please use the full installer. Please completely uninstall any previous versions including liveries, prior to installing Version 1.4.0.
If you purchased at a vendor shop, please obtain the latest installers from your vendor account.
For those customers who purchased the Ultimate 757 prior to May 5, 2019, please be aware that we have discontinued the use of the Add-On Manager. Please refer to the 757 Support Page for more information on this change and the process to convert your product to our new system.