[03:27:21] [TRP3] Error during addon loading sequence:
[03:27:21] Sequence ID: Globals.addon:OnEnable
[03:27:21] Sub-sequence ID: TRP3_API.events.fireEvent::WORKFLOW_ON_LOAD
[03:27:21] Error message: ...talRP3\modules\register\characters\register_main.lua:377: Unknown character ID: Doando-WyrmrestAccord

New issue in 1.5.1 beta 2 probably related to this one:

[TRP3] Error during addon loading sequence.
Sequence ID: Globals.addon:OnEnable
Sub-sequence ID: TRP3_API.events.fireEvent::WORKFLOW_ON_FINISH
Error message:
...talRP3\modules\register\characters\register_main.lua:101: attempt to index field '?' (a nil value)