UCS.exe crashes, and how to update binaries to most recent

[Techungry]

It happens with multiple characters, from different accounts.

Also, World.exe seems to get it right:

[02-01-2019 :: 11:06:08] [MySQL Query] SELECT `id`, `account_id`, `zone_id`, `zone_instance`, `x`, `y`, `z` FROM `character_data` WHERE `name` = 'Pokay' (1 row returned)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT `id`, name, `level`, last_login FROM character_data WHERE `account_id` = 89277 ORDER BY `name` LIMIT 12 (4 rows returned)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT is_global FROM instance_list WHERE id = 5 LIMIT 1 (1 row returned)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT start_time, duration, never_expires FROM instance_list WHERE id=5 (1 row returned)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT id FROM instance_list where id=5 AND zone=344 (1 row returned)
[02-01-2019 :: 11:06:08] [MySQL Query] delete from group_id where charid=683595 and name='Pokay' and ismerc=0 (0 rows affected)
[02-01-2019 :: 11:06:08] [MySQL Query] update `character_data` SET `lfp` = 0, `lfg` = 0, `firstlogon` = 1 WHERE `id` = 683595 (1 row affected)
[02-01-2019 :: 11:06:08] [MySQL Query] UPDATE character_data SET mailkey = '7100000A0BA648B3' WHERE id = '683595' (1 row affected)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT is_global FROM instance_list WHERE id = 5 LIMIT 1 (1 row returned)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT start_time, duration, never_expires FROM instance_list WHERE id=5 (1 row returned)
[02-01-2019 :: 11:06:08] [MySQL Query] SELECT id FROM instance_list where id=5 AND zone=344 (1 row returned)