updated changelog

cybersyn/changelog.txt

@@ -3,6 +3,8 @@ Version: 1.2.9
 Date: 2022-1-7
   Bugfixes:
     - Fixed a bug with deliveries sometimes failing to be removed
+    - Fixed several rare crashes
+    - Fixed cybernetic combinator gui not allowing checkbox toggling when clicking on a checkbox caption
     - Updated flib dependency to the correct version
 ---------------------------------------------------------------------------------------------------
 Version: 1.2.8

cybersyn/scripts/migrations.lua

@@ -187,6 +187,7 @@ local migrations_table = {
 			if not train.depot_id then
 				if train.entity.valid then
 					local e = get_any_train_entity(train.entity)
+					if e then
 						local stops = e.force.get_train_stops({name = train.depot_name, surface = e.surface})
 						for stop in rnext_consume, stops do
 							local new_depot_id = stop.unit_number
@@ -197,6 +198,7 @@ local migrations_table = {
 						end
 					end
 				end
+			end
 			if not train.depot_id then
 				train.depot_id = next(map_data.depots)
 			end