Help With Pelican mod

[Swat_player]

I have put a pelican in containment and i swaped the first seat from pelican_d to warthog_d and havent messed with any of the other seats; i put the enter radius to 20. I walk up to the pelican in containment and flip it and hold X to get in it and the game freezes. think you can tell me what im doing wrong?
P.S if u need any more info i will tell you.

[Agent ME]

Null any snd!, lsnd, or ugh! tag dependencies in the vehi and hlmt files of the pelican.

[mr_penguin]

null the sounds like Agent ME said. What did you use to transfer the pelican into containment.

[H2MoDD3R&]

i used entity beta with updated plugins

EDIT: This is swat_player; i forgot to login that name.
Thanks for advice.