i have made a animation in C4D and its 390frames and i dont know how to render the movie

i have tried the 'Make Preview' in rendering tab but its says

Rendering failed - file may still be in use by the movie player
thats when i use full render but when i render in editor mode it works!?? wierd eh?

Please Please can someone tell me how to do it because im losing my mind and im really pleased with the results and im on a deadline

cheers all hepl appreciated