From C:\Users\<user>\Documents\Dolphin Emulator copy the Wii folder
You mean the save? For Path of Radiance it's actually GC, but I managed to figure it out. Now I'm more interested in random static interference / sound doubling in Radiant Dawn and how to solve it.
This is a wii thread, so I thought path of radiance was also wii.
Try different audio backends
A little problem here... right on the beginning of the part 4 endgame, after Micaiah promotes to light priestess, and Ike says "We're ready", the game freezes and the FPS drops to 0, but with 50 VPS (I'm playing the PAL version) and the screen fades to black. The error message is "DSI exception in stmw" and "DSI exception in lmw" appeared right after the first. I tried using MMU but it doesn't work, even disabling Dual Core. Are there any solutions?
NOTE: Strangely, I've completed this game before on the same Dolphin version (4.0 x86) and the game works perfectly till the end. Now this is my second playthrough, and this happened.
If you can, find the build that started causing the error. That'll help the developers determine what is wrong.
The first build I use is 3.0, and it still crashes. I then tried using 4.0.2 but it still crashes. Even at Dolphin 2.0, the same crash happens. After googling a while, many suggested using MMU speed hack or enable MMU, but nothing changes. All three dolphin versions crashed in the same cutscene.
Try using the latest builds instead of stable releases
Oh wow. Development version apparently refuses to even boot the game

Tested on 4.0-952.
I wonder is this annoying crash happens in the NTSC-U version because I only have the PAL one.
Find the build that broke it completely if you can.