Hunk_AllocatteTempMemory: failed on 1048621 byte (total 200MB, low 2MB, high 197MB), needs283965 more hunk bytes error.
Check your system memory, if it is 1024mb ram or higher you are ok,if under 1024mb you have a bad system. Go to the Call of Duty 2 main->players->"profile name" folder and open the file config.cfg, notepad will do.
Search for the line;
Default this will say;
seta com_hunkMegs "200".
This is too low, you will have to change it.
Change the figure "200" to "512".
Save the file and try the level,again.You can also do this through console,ofcourse.
Start the game.
Open the console and type;
Press enter,close console and load the level.