Edit For Solution:
1) Firemoth - Disabled Oblivion Reloaded 3.1.2
2) Rabinna: Dunno. I killed Rabinna. No crash.
3) Corrupted Spawn: Just wait 3 days. I already knew. I only asked why such happens for general knowledge.
As stated in the title, I'm having CTDs when saving when I am at Firemoth, taking Rabinna to the Argonian Mission and when an area around Balmora has a corrupted spawn point.
For Firemoth, I crash on save when I am at the islands. I did not test this extensively (oops). I'll do so at a later point if no one has had a similar problem and offers a solution.
For Balmora, I know the solution. I just wonder: Which spawn point/what creature being spawned could be the cause? Going inside Balmora via teleportation and then going out into the afflicted area is fine, but coming into the afflicted area on foot (or levitating) causes a CTD. Until I wait 3 days of course. I ask for future reference because it irks me I don't anything specific about the crash except "corrupted spawn point."
For the quest "Rabinna's Inner Beauty" I completed the quest's various endings to see if one ending is what is causing the CTD (Which actually might not be the case).
1) Took Rabinna to mission. Crash on save upon completion of quest.
2) Killed Rabinna or she died on the way. Took Moon Sugar to Vorar Helas. No crash on save upon completion of quest.
3) Delivered Rabinna to Vorar Helas. Rabinna killed. No crash on save upon completion of quest.
4) Delivered Rabinna to Vorar Helas. Killed Vorar Helas. Took Rabinna to Mission. Crash on save upon completion of quest.
5) Delivered Rabinna to Vorar Helas. Killed Vorar Helas. Told Rabinna I won't offer any more help. No crash upon completion of quest.
As it seems, my CTDs are caused when I complete the quest in favor of freeing Rabinna. However, when I free Rabinna, my Slaves Freed counter goes to 9, which I think is the likely culprit. I feel as if I read about this problem on this website when I was researching whether Morroblivion is something I could add to my current play-through without any of it affecting general gameplay.
Problem is I can't find where I read up on the Slave Counter issue. I used the search engine to look for "Slave", "Slave Counter", "Rabinna", "Slaves" and I perused some of the pages on the "Morroblivion Problems" section. I tried using Google, too. Figuring out this problem could potentially help for if it actually has to do something with the Slave Counter, I just won't free any more slaves or use whatever solution that might exist. If it isn't, I'll just kill Vorar Helas and abandon her.