Well... i've isolated the problem.
Its occurs when I start GPxPath (v. 3.91) toogling the "Debug mode" option. If this option is not setted the game loads normally.
And, after the load stage, the game works quite well too... the problem is to use the Debug Mode option, i'm sure.
But without this option many (almost all) of the tracks crashes the game... what can I do?
Thanks again.