InnoDB error

[nil18]

Hi everybody!

I have a big problem!
I want to copy a database from my Laptop to my Computer.

The Laptop runs with MySQL Server 4.1
My Computer has MySQL 4.1 -win installed.

All I do is: I go to the "data" directory and copy the whole folder with 
ctrl+c
Then I paste it on my USB Stick, and put the whole folder on my Computers 
"data" directory.

But when I'm trying to access via MySQL, the following error occurs:
ERROR 1016 (HY000): Can't open file: 'autor.InnoDB' (errno: 1)

Please help me! What can I do to make it run?

Thanks a lot, and sorry for my bad english :)
Greetings from Austria
Gerrit