Getting this error when browsing the view using SysTableBrowser

Seems to be coming from the range I've added in the View:

((PersonUser.VALIDFROM <= Heu_UserInfo.today) && (PersonUser.VALIDTO >= Heu_UserInfo.today))
The build and sync is fine and the SQL View is coming correct.

Any Ideas?
Make sure you are selecting T2's fields ("T2.ValidFrom" and "T2.ValidTo") for your selection fields