Save breaking bug appers in some cases with Blood Arcanist enabled.

[Vek17]

@Llisandur#1056 on the Discord ran into an issue when creating a sorcerer with the following mod list:

After creating a crossblooded/nine-tailed heir/overwhelming mage the game became unloadable. I investigated the affected save which is attached and found that the offending blueprint (05625729a96e4861bc4ac10325cd7259) was from the BloodlineDraconicGoldProgression(6c67ef823db8d7d45bb0ef82f959743d). I went though data viewer with the user and identified this anomaly in the progression at level 1:

One of which was a TTT blueprint with ID: e2cfd3cedf7c40088b25aa82d6db3c77, the other was from somewhere else with a different ID, though I expect it is the result of a cloned blueprint not being assigned a save stable BlueprintID.

Upon disabling the Blood Arcanist archetype the second BloodlineRequisiteFeature blueprint was no longer present which leads me to believe somewhere in that creation process this is getting attached. I took a glace at the coad and didn't immediately see an issue but it seemed like this is at least worth a look
Manual_239_Underground_Caves_of_Kenabres__15_Arodus__VIII__4715__12_09_53.zip
.

[Vek17]

Looks like this is an issue because TabletopTweaks ModID changed from "TabletopTweaks" to "TabletopTweaks-Base"

[TMPhoenix]

Had the same issue; tracked it down to this line:
https://github.com/Stari0n/MagicTime/blob/0df7584bb7e6fffee13973e0ba4d7f5c7abfae7f/Content/Archetypes/BloodArcanist.cs#L29 in combination with the mod id change Vek17 mentioned.

Workaround for my sorcerer was to disable Blood Arcanist (I was not using it on any character).