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Game is saved right after killing the succubus.
In this save, I have no entered the room and have not talked to the
zandalor.
Bug does not occur when I scrye and go for the other council members.
Bug only happens for this human councilor mardaneus.
When I telport to Aleoth WITHOUT scrying for the human councilor, I can still
save normally.
But when I scry for human councilor and telport to aleloth, ( where
the orc spawns in Aleloth ) I can no longer save the game ( moment after
I leave the council chamber.). The save buttton becomes gray forever.
If I save mardeneus after ignoring Demona( due to the bug, cutscene
doesnt even appear and she is neutral that I can neither talk or attack her )
, then the zandalor and the other cutscene does not work properly.
For example after returning back to council chamber after resucing Mardeneus, I scry for wizard then the wizard come so me but the wizard cut scene does not occur.
Interesting thing is that save button is already gray before even meeting Demona. That could mean that another cutscene was suppose to occur ( but only cutscene for human council I heard was the demona cutscene ) or another cutscene
was in progress. ( but I can still save while I am in the council chamber )