I'm playing BGEE Trilogy heavily modded. I've killed Balthazar, but the Solar never called me to give me the final talk and remove the last barrier in the Plane. Is there either a console command or a variable to change or anything else that will help me move on? Any help would be greatly appreciated!!! Thanks.

Did you try reload from outside Balthazar's Temple?
That sometimes help.

Yep, I tried that. I have Ascension installed, and I tried teaming up with Balthazar against Melissan, and I tried killing Balthazar, and either way I'm stuck.

If I remember right, you have to leave Balthazar's castle to get transported back to the Pocket Plane.... maybe? Maybe that was something in Ascension?

Or maybe I'm misremembering.