* An issue where some exceptions during plugin initialization didn't lead to a DB transaction rollback was fixed.
* An issue where the automatic plugin DLL handling failed in case of multiple processes was fixed.
* An issue where the invalidation of MetaClasses due to changes could lead to temporary loss of system objects was fixed.
* An issue where the database schema wasn't updated correctly when MetaProperty assignments changed was fixed.
* An issue where system relations were corrupted after an upgrade from an older version was fixed.
* An issue where bulk saving threw an exception was fixed.
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