Fixed an issue where any changes using random generators would result in the terrain noise being initialized in a different way, causing large world seams if anything was changed (to the point where unrelated mods could affect the generation). This only affected 1.4.X worlds so older worlds are fine. However, the fix for this necessitated causing one more world seam, so any worlds that were generated with 1.4.0 or 1.4.1 will have different generation now. I apologize for any inconvenience this may have caused, but damage should be minimal given the same day release and the fact that old worlds were unaffected by the bug as they do not use the new generator system that 1.4.X worlds do.
Fixed an issue where frozen beaches and red sand beaches would spawn normal beaches at their edges.