Awesome, great job!
First I had a problem because I did not delete older Version of the track. In UI I had 3 Donington track to select, it was Donington, Donington GP and Donington National. When I choosed Donington (It should not be there) there where texuture problems in it.
I wrote Brun (Author) and he wrote back, there should only Donington GP and Donington National to select.
So I deleted the track and replace it with the new 1.11 Version and now everything is ok and I can only choose between GP and National :-)