Bluetooth problem

Ok i will try to be as clear as i can:

PROBLEM: sending files from MacBook to MacBook Pro via blue tooth.

When trying to send a file from MacBook to MacBook Pro, the two laptops show that they are connected via bluetooth
and can 'see' each other. Try to send file and on the sending computer (the MacBook) i get the usual message window saying that
it is connecting to the MacBook Pro) and it has that annoying spinning coloured wheel.
On the MacBook Pro it has a window that says the MacBook is sending a file....and it is gathering transfer info. BUT NOTHING HAPPENS!
No file is sent from the MacBook to the Pro...the coloured wheel just keeps spinning!!!

BUT:

When I try to send a file from the Pro to the Macbook, no problems at all...easy as it should be.

BUT...and here is where i get very confused:

If i try to send the file that was received from the Pro to the MacBook, back to the Pro, from the MacBook...it works!!!....not a problem!!!

I hope all that made sense??

Can anyone offer any help or advice???

It would be much appreciated.

Cheers, Tim