RTR8 V4.0.2 FULL VERSION

[Lakis071051]

I have installed RTR8 V4.0.2 FULL VERSION according to the instructions.
When I start the game I see an error message:
"The folder for the game type 'Campaign Mode' could not be copied, The folder for the tree types 'Default Trees' could not be copied.
Although the game may run normally, it is likely your desired configuration will not be in effect, and the game might not even start correctly
Do you wish to continue launching the game?"
Nevertheless I can start the game normally until the campaign map. Then the game is to slow that I cannot move the mouse cursor at all.
Any suggestion please?

[ahowl11]

I have installed RTR8 V4.0.2 FULL VERSION according to the instructions.
When I start the game I see an error message:
"The folder for the game type 'Campaign Mode' could not be copied, The folder for the tree types 'Default Trees' could not be copied.
Although the game may run normally, it is likely your desired configuration will not be in effect, and the game might not even start correctly
Do you wish to continue launching the game?"
Nevertheless I can start the game normally until the campaign map. Then the game is to slow that I cannot move the mouse cursor at all.
Any suggestion please?

In the Launcher don't use the default trees, instead use the other version.