Battlefield 2 Memory Error

When i want to play the maps from the Armored Fury Boosterpack the Game loads the maps to 62%(when the geometires loaded) the game Freeze and the error : Memory.dll : sanity Check: Block size 469766144 (448.00mb or 334.00mb) Doesn's Seem Sane. can some one help me ?

System

Cpu: Intel core Quad Cpu q8200 @ 2.33GHz 2.34GHz

Ram: 3,00GB

operating system : windows vista Sp2 32bit

Displaycard : AMD Radeon HD 6670