Character sprites and ellipses disappearing and/or offset

Robtachi

I am running the latest update of BG:EE on Windows 7 64-bit, ATI Mobility Radeon HD 5870. So far, through several game areas, the sprites and selectable ellipses underneath them of ALL characters, player and non-player, do not display properly or oftentimes AT ALL anytime they are moving. Only when characters are standing still do they display normally. Frequently, when moving, though also occasionally while standing still, the player character's and NPCs' sprites are significantly offset from the ellipses that should encircle their feet, making it virtually impossible to properly select characters or maneuver about. In it's current state, my game is essentially unplayable, and without a solution I will need to uninstall and request a refund.