Mike, here is my test mission and the steps:
https://www.mediafire.com/file/xhxpl59ld7o6ibc/test.mis1. Load my mission in FMB
2. Play the mission. Ki-67 looks fine on the runway
3. Quit the mission back to FMB
4. Change the plane in FMB to the Ki-45 Kai Ko, 1942
5. Play the mission again.
6. Plane explodes on runway
If after playing the mission the first time, you exit IL2 completely and then re-run, enter FMB, load the mission and then change the plane, it does NOT explode. So, it appears that something gets loaded after the first plane that causes the explosion with the second plane??? Also, if you look at your log you will see a lot of the same Java errors repeated over and over like it is stuck in a loop.
It is not limited to these two Japanese planes. I can reproduce it with about half of the Japanese planes (Army and Navy). But I have not seen it happen with any other nations planes. I also reinstalled BAT one step at a time and this starts after EP07. Before that, I cannot get it to happen.