[NySWat]

And this is happening only to that part of LV? its either the map or vehicles! check out there links! because A lot of things can Cause op codes. and the way I fix mines was I unstall GTa sa deleted the folder completely and reinstall the game with no mods just the downpatch and samp --- and no more op codes! and then the second time I had to edit the map and delete invalid codes that was use for vehicle spawning!!! and it work for me

http://www.gtaforums.com/index.php?showtopic=509696

https://sampforum.blast.hk/showthread.php?tid=380914

https://sampforum.blast.hk/showthread.php?tid=207572

I hope these links help !!!!