Map-Download via Bluetooth....Help please.....

I have a LG HB620T and I installed the App on my Handy. Then I downloaded the Files for an Map-Download over Bluetooth via PC.

The Problem:

I activate my Handy and my PC over the Bluetooth-Device (2 ports: 3 & 4) from the Network-Menu in the navigami-Software. My PC was found as Bluetooth-Device. I accept this Connection.

Then I tried to download a Map.

Following Message came everytime on the Handy-Display:

Can`t load map:
the target of the name cannot be found

I tried both of the Bluetooth Com-Ports....! Always the same message...!

What does it mean?

What make I wrong?

Please help me...