Hello, I am having a problem that is severely hindering my game.

When I use level_load in the middle of a game to load the next level, the collision system seems to error severely and strange thing happen. Sometimes the player is unable to move while other times the player falls through the floor.

I have had this problem with other games also, so could someone please help me and tell me why the collisions could possibly be acting strange after using level_load in the middle of the game?