LB Supported Versions (as at 30 June 2018)
Unity 2018.2 requires LB v2.0.4 Release or newer (coming soon)
Unity 2018.1 requires LB v2.0.3 Release or newer
Unity 2017.3 requires LB v1.4.3 Release or newer
Unity 2017.2 requires LB v1.4.2 Release or newer
Unity 2017.1 requires LB v1.4.0 Release or newer
Unity 5.6 requires LB v1.3.8 Release or newer.
Unity 5.5 requires LB v1.3.5 Release to LB v2.03 Release.
Unity 5.4 requires LB v1.3.5 Release to LB v2.03 Release.
Unity 5.3. Last supported on LB v1.3.7.
LB v2.0.4+ requires Unity 5.6.2p1 (released 29 June 2017) or newer
LB v2.0.4 is [currently in beta]( [BETA PROGRAM] Landscape Builder - realworld, GPU acceleration, prefab placement page-5#post-3537896)