MotoGP 08 for the PC has an important update you need to read

Capcom regrets to inform consumers who have recently purchased the PC
version of MotoGP 08 that we have just identified a technical issue with
the PC version of the game. This issue only happens with MotoGP 08 PC
when installing the game to a custom location on a hard drive; This
issue does not affect the default installation, as it only occurs when
the destination location has been changed.

For more details please click here