Hey Knight Otu, I've been trying to gen a world and having it crash every time at the end, at the finalizing stage.
I'm not sure if it's your mod -- I'm just getting back into the game after a long break -- but I thought I'd check since the Shyhak are implicated in the error log and you mentioned they're new and possibly might have a hitch. So, here's my errorlog:
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: data/save/Primia/raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
Impoverished Word Selector
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the interaction CULTLEADER_DEEPONES
Error Initializing Text: raw/objects/text/secret_fish.txt
*** Error(s) finalizing the reaction KO_DF_SHYHAK_SHINING_MARBLE
KO_DF_SHYHAK_SHINING_MARBLE:Unrecognized Item Token: BLOCK
*** Error(s) finalizing the reaction KO_DF_SHYHAK_KAOLINITE
KO_DF_SHYHAK_KAOLINITE:Unrecognized Item Token: BLOCK
Impoverished Word Selector
As you might be able to tell, I've also got IndigoFenix's Deep Ones mod installed, and, not obviously, Eotyrannus's Saur Fortress too. So it could be them, but I thought I'd check with you first.
EDIT: Oh, also, I have been using custom-designed PW worldgen file, just in case that matters.