Phys X problem upon compilation of our game

Hi guys.

So the problem is we get an error in log when we first play our game, it plays for about 20 seconds when the game first starts and it seems to be referencing our foliage.

It seems to be compiling these errors every time we start our game.

If we delete all our foliage from the level then this error does not appear.

Phys X Problem photo 10382165_659306227457764_1070571492277819957_n_zpsdef82841.jpg

Has anyone seen this before and can anyone tell me whats going on so we can figure out how to fix it.

Thanks in advance for any help, appreciate it,
Jon