Amy Santiago

I fly a chopper to get the victim. After I rescued him from the water and sending him in the chopper, I press "*" tried to get in the chopper, but the engine always shot down immediately and can't recover even I swap to the pilot seat, and then we just falling to the ground. 
 
Did anyone face this problem too?
 

More than likely you are crashing because of something else. Ultimate Backup and LSPDFR themselves seemed to load up fine according to your log, but I don't see any crashes that would indicate the source of the issue. I would remove your plugins for LSPDFR and see if checking them one by one would fix your crashing issue. It is rather tedious, but there are no crashes that I can see from the log, checking your plugins one by one would ensure it's not caused by one of them.
If you want to change backup for LSPDFR, you can edit regions.xml. backup.xml inside of the custom folder will let you change which departments are set to the specific patrol areas. Ultimate Backup is more complicated to edit, but you will only need to edit custom regions and move the patrol zones to the desired agency.

So changing the mods folder name to  _mods  was still causing your game to crash?   If so, then you can take NVE out of the equation as it is in your newly named mods folder called _mods and GTA can't find that folder.    

DId you say you reinstalled a clean game?  Meaning a complete new game directory, with no scripts or other asi type plugins in your main game directory?