DataSafe Local Backup 2.0 does not recognize USB Key

Hi,

I have a new Inspiron 580 MT with Windows 7 64 bit.

I wanted to run DataSafe Local Backup 2.0 basic and store the data on a Freecom Tough Drive, 250GB USB 2,0.

I got the message: No USB key recognized.

The Freecom Tough Drive opens with a password and you can see the stored data in Windows Explorer. I am able to copy data on it and it works normally, but, when I start DataSafe it does not recognize the external drive (or only the key??). I tried another USB-Port with the same result. I am able to work with the drive, but DataSafe Local Backup does not see the drive.

Yesterday I ran "safe and restore" and stored the data on this drive without difficulties, the drive was in the same USB-port.

Please could you help me?

Regards

Ingeborg