Sorry, I missed the note as to the version. You did say one thing though about the 10x connection I am not clear about. If you manually connect the 10x using the BT control panel, Mobile PC will not find it.
The safest way is remove the 10x from your Bluetooth manager. Then start Mobile PC and let it search Bluetooth directly. Caution...your mouse may be difficult to use as GMPC checks the various BT connections. I find the Toshiba stack a little slower than the Microsoft one. You may hear the BT cycle on and off several times (if you have the sound on) before it locks to the 10x. This only happens the first time though.
The latest driver for the Toshiba BT stack is here;
http://aps2.toshiba-tro.de/bluetooth/?page=download
and will work with your device.
Terry