You need to ensure you have the latest videocard drivers installed for your system. These should include OpenGL drivers if it's an OpenGL capable videocard.
If you have an ATI chipset card, you may want to try manually using an older OpenGL driver file as MOHAA and MOHAA:Spearhead expansion have a bug that can cause the OpenGL substem to fail initialization as the device string returned from the drivers is too long. Older ATI OGL driver file has a shorter string to get around the bug.
wen i play the game 2 miniutes after ruffly it stops and says:
MSG_ReadDeltaEntity: unrecognized entity field type 9714 for field 202
can u help me with this plz?